Rx-7$4$me

Hey. Im planning on taking alook at a 93 next weekend. IT has a blown engine, blown radiator and its possible the AC doesnt work. now. Im wondering what I should really look for when I take a look at it, to make sure no **** is all f'ed up? Im getting a new engine put if I buy it, and im wondering how much more reliable does the good ol rotary get with thicker apex seals, or two peice perhaps? I would like some input on this and any suggestions thanks alot everyone in advance

Stevo