I'd like to switch my 345 IH engine to the AMC V8 used in some TA's. If anyone has any of the necessary parts for the conversion in a 72 3/4 ton 4x4, please let me know. I've got a couple of people looking for the 401 engines too. Can this be done in 4x4 truck? Was the AMC offered as an option in any other truck besides the TA? Rocky