305 small block build?
 

What to do to a 89 Camaro 305 V8, not looking to swap it, just seeing if there can be anything done to make it have a little bit more power, and what will it add for HP-Torque.

Without violating emissions, I doubt that there is much that can be done. I'm thinking that a 350 engine might drop right in but do not know the limitations of the computer since it expects a 305. Would the computer know the difference?