WankelYanker

I picked up a 1989 GXL 5-speed a few months ago and it is in pretty good condition aside from some rust, a couple of dents, and some heat damage. (It was sitting for about a year) I'm doing most of the body work myself to get rid of the rust before it gets any worse, which unfortunetely happens to everything metal in Hawaii. Anyway, my question is about suspension. It rides a little rough, and I wasn't sure what I should replace it with, and if I can do it myself.