Heys thanks for the info on the contacts. I'm having the truck towed back to my sister's place in Wildomar this a.m. The guy I bought the truck from - who's a mechanic - said he'll come check it out. When I told him what the first mechanic said, he basically told me what you guys are all saying - there's alot to check out - valves, pistons, etc., before you even start thinking about replacing an engine.