yes the motor is still in the truck. i know something about the ID tag is hinky, it has an extra letter in it (to say the least) but im still new to this so i dont really know what to do. is the casting number the one on the pad closest to the firewall? hey, close is better than where i am now! im thinking i might just take off one of the heads and take that with me to NAPA or Autozone or something to be able to match up the head gasket and hopefully figure out a starting place for what motor it is. it seemed like a good buy at the time, but its starting to be a nightmare. but i still love it! lol. . .its like an addiction or something!