I have a 350 pontiac engine in my 79 trans am that i perchased recently and the thing is really lacking power. The budget is about $2500. The options that i can up with were 350 create engine, get a 350 long block, rebuilt and improve the existing engine or get a 400 or 455 and rebuilt it. What i would like to do is get a chevy engine but it won't bolt up to my trannie. Dose anyone know if i can get an adaptor kit somewhere? Do i need a new tourqe converter and ect.? Also any suggestions on my options would help me make my mind up.

Any help will be awsome.