Dad got off a guy a 79 C30 Chevy that had an engine similar to that swapped in (looks like a I6 Isuzu) it was an interesting truck, but they did a terrible job swapping it over. We parked it due to the 3 speed brownie going out, might put 3.42s in the 14 bolt and just eleminate the 3 speed and go direct off the isuzu 5 speed.