Alright, I was under the impression that if I decided to stick with the 87 GN heads I have now that I would lose my A/C but I talked to John from Johnsperformance today and he said I am gonna have a hell of a time trying to route my exhaust if I use the 87 GN Heads instead of the TTA heads. I am using the H&R Poly Mounts so I know that will give me a lot of clearance with my downpipe but does anyone know anything about the clearance issues with TTA Heads vs. 87 Iron Heads? I have no problem losing my A/C (it doesn't work anyways). Just need some more personal experience opinions here. I can have custom headers and other pipes made but I just have to make sure I am not gonna be sawing away at my engine bay or frame to get stuff to fit. Thanks
BTW: This is going in a 1991 Pontiac Firebird
BTW: This is going in a 1991 Pontiac Firebird
