84 camaro base coupe

What can anyone tell me about a 84 base model coupe in comperison to my 91 rs, what are the differances are? I'm thinking about selling my 91 rs (with a 305 and a 5 speed) for a 84 with a 305 and an automatic. What major mechanical differances can i expect?

not much mechanical difference, the main difference you will see is cosmetic. body panels, especially the bumper cover on the front end, and some interior peices will be different.