Im looking in to what its going to take to swap a T56 into my 81 Trans-AM (know its not technically a 3rd gen but ya'll are as close as I can find). I read that most T5's will not take over 300hp. I know ill have to get another BOP bellhouseing for about $400 (mine uses linkage type). What I'd like to know is will it bolt to my tranmission support with only another mount or will there need to be serious mods for this and will my fly wheel and pilot bearing still work? Are there junker swap parts anyone knows of I might can use?
I love hunting in a bone yard.

Am running a 76' 455 HO 30 over (650 Eldle, performer intake, 468/472 comp cam, mallory unilight, and stock heads) and a Borg Warner Supter T10 4 speed with Hurst shift kit.

Side note my 4spd's 1st gear is down and toward me rather than strait up as I normaly see, Is this normal for a old Pontiac tranny?