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I am thinking of vee banding the #7 header tube to make the headers removable to get past the brake MC and equal length.your thaughts?

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equal lengths are not allimportant on a blown engine but if you are anyway taking the time,you might aswell go for it!
Vband joints are good when you need a split somewhere however fairly expensive,you could make the joint with flatflanges aswell or a sliptube or you could even if room and angles alow for it use flanges on a sliptube with a regual flatgasket the last version might be overkill but make for a superb seal at a much lower price than the vbands.

looks good this far

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Correct... lengths dont matter on a blower motor...
doesnt do anything... just get the exhaust out...
if you didnt need to cap it or connect exhaust to
the collector, you wouldnt need the collectors

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Thank for your input,Have you ever use the Vee band on a single tube?
also I would ask if you get the time,
how much argon/co2 is used when back gas prosess is done when welding?
How much flow should there be inside the tube?
Do you have a pic of a back gas connection in use?
THX

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Yes I have used a V-band before on a pipe.. I liked
it better than a slip joint... on the back flowing
I use about 50% more than for the welding cup...
on my flow meter I weld at 20-22 back flow is 30...
just use a rubber cork at one end and another rubber
cork at the other but I have a 1/8" pipe nipple stuck
through it... clamp the gas hose to it... make sure
you shut the gas off when you finish the weld...
when I get to about 1/4" of weld left to do at each
joint I shut the gas off(there is plenty in there)
and it wont blow a hole

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Thanks,will the internal psi blow the weld out?

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It can.. thats why I turn it off or the last 1/4"

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i back perged my headers when i built them. the welds look the same inside as they do on the out side. wish i could have done all mine equal length but i had alot of stuff to go around so geting the pipes from point a to b was more importaint

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The driver side is the problem area with the MC in the way and I was not going to move it.
Mr P body thx I figured just to get some flow in there but I was limited on tools.[flow gauges]
PS:1974pw I see you retained the round tube form on the header flange so did you make the flanges?if not what is the part #thx.

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i had a good friend make me those. he has a cnc in his shop and made it match my head and go to the round tube all with in the thinkness of the flange

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Cool that you were able to do that,there are many ways to do things but few have the resources.
This is going to be interesting trying to make my 1st collectors.

This is just a test weld mockup.