Buying a wrecked mustang need to check for aftermarket parts

[StreetDreamsGT]

Hey guys, I found a wrecked 93 vert for sale, it's got saleen rims, corbeau racing seats a fiberglass hood, and an msd distributor. As well as what I believe to be bbk shorties. The guy who's selling it bought it from another guy who didn't know what all was in it, they think there's a cam in it, an aluminum driveshaft, and a set of rear gears. I wanted to know how I could tell what all was aftermarket, for example the driveshaft. Also, where are the stock head numbers located? And because it's a 93' I know it has the hyper pistons, but is the computer any different from the previous years?

 

[BaXTeR3221]

Computer shouldnt be any different, should be labeled A9p if its an auto or A9l if its 5-speed. Aluminum driveshafts tend to stay clean and looking like aluminum, where as the stock ones will get black and have surface rust. I know thats not very precise, but that should give you any idea.