wiring that is going to suck, going from an obd2 car to an obd1 engine. also your going to need hasport mounts. cracked head is not an easy fix, it means you need an entire new head, which is pretty damn expensive. if it really is just a header, it should be fine. whats wrong with the engine? that setup could easily be sold for twice that, so there must be a reason hes selling it so cheap. you get what you pay for.