It shouldn't be a problem other then the four speed automatic. Pontiac never used one so some sort of adapter will be required. About the only bolt in I can think of is a multi bolt pattern case Turbo 350 with lock up converter. The late 70's used this case. It fits BOP, Caddy, and Chevrolet. As far as the motor goes, don't waste your money on the 326. Parts cost just the same for the 400 and you will much happier with the bigger cubic inch motor. I would sell both of them and look for a 455, then you would have something that would haul @&%!
Joe Hand, ex-Pontiac racer.
