I'm in the planning phase of putting new heads and intake on (probably start around christmas). I'm sort of planning on trying to find a 96 explorer to pull the gt40 heads and intake off of. My question is this: is there any/alot of maintanance that needs to be done on the heads before I put them on my car? I've decided on the gt40 heads because i figure i can get them from a junk yard, and therefore not break my budget too bad. This is going to be my first big project, so i'm doing a lot of reading right now trying to learn as much as possible before i start in. I expect the only way I'll really learn is by doing it, but i want to eliminate as much surprise/difficulty as possible. These message boards have been a big help. Thanks in advance.