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Are you forgetting about that huge chunk of metal called the radiator support?

The double tube also limits a lot of great oil pan options. If you are running an otherwise stock street car with just a K-member change the extra cross tube may make you feel better. This may be give some advantage for a road course car. The frame rails are trying to be twisted from the coil over shock mounts in these coilover rack steering conversions. When mopar designed the front the weight of the car was on the torsion bar crossmember and we know how strong a materail that is. For any of these aftermarket suspensions to work the car really needs the forward bars from firewall or cage to front frame. Just my opinion.

Leon

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I think a correctly designed 2ND bar made from properly sized tubing stiffens the car more than the stamped sheetmetal core support that has a big square hole in it. And yes, I agree that the coil over setups need the frame/upper suspension to firewall braces. I've said that many times, along with the "opinion" that by the time you get the strength back in the front end by adding support bars, gussets, etc. you lose most of the weight savings by going to the tube suspension.