53 m37 with a propane fuel conversion. I learned how to drive in this truck when I was 11 I've grown up with this monster and I am attached to this thing. The blizzard of 03 dumped over 6 feet in 36 hours this truck with a plow and chains is the only thing that saved us but all that load hurt it. I've got a piston rod knocking and need to find parts I may need a crank and a journal bearing set any advice?