If Im not mistaken some oldsmobile cutlass in the approximate late 70 to early 80s model came out of the factory with a 350 diesel. It was a gas engine that the general converter to a diesel. Every single person I knew who owned one of these had nothing but probelms constantly. Those that kept them had the motors go south at early miles. I know of 2 that puked out at less that 100K. Like someone else stated on this thread. If you want a diesel motor...go buy one I think is the best advice you have got so far.