After buying the wrong one once, I thought I'd put some effort into getting the right one the second time. I would expect there to be 4 basic versions: (updated)6.1L, w/o VVT, nonMDS = [05037379AD]w/o VVT, MDS =VVT, nonMDS = [05037379BC] ??VVT, MDS = [05038419AB]BGE ??? =Are the truck and car 392 cams different outside of the above 4 configurations (also a 5th BGE)? I bought the 05037379BC, but it turns out it is for nonVVT. I want VVT, nonMDS, and the higher performing version if there is as car/truck difference. I see 05038419AB is a 6.4, VVT nonMDS, but looks to be for trucks.