hey just bought a 96 zj with a 4.0l 210,xxx for 200 bucks, two major problems one guessing it has a bad head gasket have to look more into it. because the girl who owned it had it overheat on her twice so just guessing the head is warped. anyone ever have these heads machined? they are aluminum correct? and it also drains the battery if it sits. when she parked it the jeep ran fine then before i bought it drove it for a few and it idled like crap but she said it was fine before so maybe with the little hammering on it i did in the short time i drove it maybe more damage but still not a bad deal. also was wondering how the tranny would be with that high miles and auto. had a five spd with 260 and was fine when i sold it.