I can't seem to find any good pictures of the ta long tubes that show me what I'm looking for. I have major fitment issues with the Doug's on the passenger side of the cutlass, and I suspect that the number 6 primary is routed differently on the ta piece. I noted the ta headers are sold as 68-72 a body and 78-88 g body where the Doug's are not. I got them for a deal and I'm thinking I should have bit the bullet on the ta headers instead. If anybody has any pictures of how the numbers 4 and 6 make their way down past the frame, I would love to see them. Mine go almost straight down and contact the frame, where the only stock photos of the ta's I can find make it look like that tube kicks inward a bit on the way down.
I have mixed #4 and #6, it would actually be the #4 tube that causes the problem. From what I can see in that picture it seens like it is routed different on those headers. I crudely outlined where I have problems on the Doug's piece. This section goes basically straight down and then straight back, and has heavy contact with the frame between the two mounting points for the lower a arm.
Thank you very much. That looks like what's different to my eye. Yours has a noticable bend right in front of where the 4 primaries come together that looks to tuck that whole section inboard somewhat. Mine is almost arrow straight from collector to that right turn upward.