FENDERWELL HEADERS
while I agree with HemiDenny for the most part, tire clearance Sucks. Not positive but I believe my Headman fender well headers are equal length.
I also felt a difference when switching to them over the Proparts I had. should have done some testing but....
there was also a noticeable drop in under hood temps. it was not just because of the holes for the fender well headers as they were there with the pro parts as well.
I have run Hooker fender well, Pro parts & the headman in my Dart. I prefer the Headman.
I have also dealt with the CPPA / TTI under chassis big block headers on a friends car.