we have a hot farm 806 with a DT466 motor, block came from a IH dump truck(468ci i think). not sure on the turbo, has a p-pump, 688833C2 head, 1979 intake(the date stamped on the sticker). hopped up cam but idk how big.
I've heard a lot of ppl say 600hp easily out of a DT466 with very little...