After completely going through the motor and several trips to the machine shop it seems that if I had just looked at the heads when I pulled them off instead of tossing em on the shop floor I coulda saved a bunch of time and realized i had a crack. Does anyone know where i can get a set of heads for the 6g72 Id prefer a new set but if i gotta get them from the crash yard thats fine too anyone know what model vehicles will have heads that will fit as well?