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Mike, I have an 10 point rollcage done in my 67 Belvedere. The 2 rear bars were custom bent to go down through the speaker holes. The front seat had to be out and the rear seat had to be sneaked in between the main hoop and rear bars with the rear windows rolled down- but it went in and there it will stay. I get some pics on here later today for all to see.
How's the rest of your project coming along?

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I REALLY HATE TO BE THE BEARER OF BAD NEWS!!!

You might as well solder those rear supports in your car if you are going to bend them. The reason these bars are required is as follows. When you are traveling at speed and the car rolls it is most likely traveling forward. Force will try and lay the main hoop down into the rear seat area. These supports keep the main hoop up right. If you have ever used a tubing bender you will know why bending these bars is such a bad idea. A rear halo, as pictured, is the way to go. But, there is no need in the third and fourth bar from the halo to the main hoop. They intersect the hoop in the middle. This will support the middle of the hoop but is really unecessary. An X from the hoop to the front windsheild bar would do a lot more. Just be sure the bars going from the main hoop to the back seat halo have bars on the opposite side of the intersect going to the frame rail.

Not trying to bash anyones hard work but sometimes bad ideas get passed on when trying to find an easy way around a situation. Just remember mild steel tubing is strong when straight and noodles when bent if the bends are not structurely supported.

Leon

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Those bent rear support bars are going fold like newspaper if they're ever asked to do their job. Also, they don't contribute much to chassis rigidity.

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I REALLY HATE TO BE THE BEARER OF BAD NEWS!!!

You might as well solder those rear supports in your car if you are going to bend them. The reason these bars are required is as follows. When you are traveling at speed and the car rolls it is most likely traveling forward. Force will try and lay the main hoop down into the rear seat area. These supports keep the main hoop up right. If you have ever used a tubing bender you will know why bending these bars is such a bad idea. A rear halo, as pictured, is the way to go. But, there is no need in the third and fourth bar from the halo to the main hoop. They intersect the hoop in the middle. This will support the middle of the hoop but is really unecessary. An X from the hoop to the front windsheild bar would do a lot more. Just be sure the bars going from the main hoop to the back seat halo have bars on the opposite side of the intersect going to the frame rail.

Not trying to bash anyones hard work but sometimes bad ideas get passed on when trying to find an easy way around a situation. Just remember mild steel tubing is strong when straight and noodles when bent if the bends are not structurely supported.

Leon

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What happens to the tubing if it's chrome moly as my cage is?

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I REALLY HATE TO BE THE BEARER OF BAD NEWS!!!

You might as well solder those rear supports in your car if you are going to bend them. The reason these bars are required is as follows. When you are traveling at speed and the car rolls it is most likely traveling forward. Force will try and lay the main hoop down into the rear seat area. These supports keep the main hoop up right. If you have ever used a tubing bender you will know why bending these bars is such a bad idea. A rear halo, as pictured, is the way to go. But, there is no need in the third and fourth bar from the halo to the main hoop. They intersect the hoop in the middle. This will support the middle of the hoop but is really unecessary. An X from the hoop to the front windsheild bar would do a lot more. Just be sure the bars going from the main hoop to the back seat halo have bars on the opposite side of the intersect going to the frame rail.

Not trying to bash anyones hard work but sometimes bad ideas get passed on when trying to find an easy way around a situation. Just remember mild steel tubing is strong when straight and noodles when bent if the bends are not structurely supported.

Leon

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What happens to the tubing if it's chrome moly as my cage is?

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We used chrome moly tubes in my '67. We pulled out the back seat & made bunches of measurements. The down bars from the main hoop are straight, go through speaker holes & weld in near the back of the trunk. I've got pics but they are in my other computer & it's down right now. With the bars the way we have them the rear seat does go in, but it is a tight fit & is NHRA legal.

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Guys, forget about ANYONE ever 'using' the back seat again, ever, unless you pad everything and install a 5 point harness for everyone in the back, and they wear a helmet, and then cross your fingers...unless you like seeing your friends or loved ones smashed to bits if god forbid you get into any sort of an accident. There's a reason why they mandate a 5 point harness and roll bar padding once a bar or cage is installed, and that's to prevent the same thing from happening to the driver. What makes you think a back seat passenger is going to be safe without all that? Way more steel around them to crash into as well, and they are blocked from a quick exit as well. Put 'em in the pass front seat... with a harness and padding.

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Guys, forget about ANYONE ever 'using' the back seat again, ever, unless you pad everything and install a 5 point harness for everyone in the back, and they wear a helmet, and then cross your fingers...unless you like seeing your friends or loved ones smashed to bits if god forbid you get into any sort of an accident. There's a reason why they mandate a 5 point harness and roll bar padding once a bar or cage is installed, and that's to prevent the same thing from happening to the driver. What makes you think a back seat passenger is going to be safe without all that? Way more steel around them to crash into as well, and they are blocked from a quick exit as well. Put 'em in the pass front seat... with a harness and padding.

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I guess no one should drive a car with a full cage then either. Whats the difference between hitting any inside metal object or the bar? At least the bars can be padded.
Doug

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I think the main difference would you are the driver, who has control? from the moment the starter engages vs a passenger has none except to exit the car.