has anyone actually mated up a T56 w/ their pontiac engine?
 

I am not a technical guru and don't know how to make sure all the clearances and specifications will work so i wanted to find someone that has already done it.

I have a 71' firebird w/ a 400. It is an original 4 spd., but now has a turbo 400 in its place. I am fixing it up to be my daily driver so I want a double overdrive. Will a viper tranny work, or one from a Z06?

Any other companies besides keisler do this?

thanks for any advice.
danny