I know you guys have probably beat this horse to death but Im installing a 455 in my 70 Cutlass Supreme to replace the 350. Automatic, floor shift car with ac. Anybody tell me which brand will fit with no problems?

 

I had Black Jack or Hedman headers on mine (can't remember which). My only problem was the lower control arm bolt. I just took it out and turned it around, no more problem

 

I really like the Hooker Competition headers i just installed on my 66.
Excellent quality in my opinion (i've bought many headers in the past).

Still had to do some minor clearancing on both sides, but thats pretty much par for the course for headers.

 

Talk to Mondello I bought a set of theirs for my 68 442, fit great with no problems.

 

I got a set of Hooker comps coated and although I never put them on the car myself they looked like it was pretty easy.

 

Doug thorleys 1 and three quarters. Beautiful period except for a mini starter. I know use hooker super comps that are much bigger for more power.