Scored one today, sv motor, 1977, 5 speed, LARGE pto winch. Couldn't read the pad on the motor, has tilt fiberglass doghouse. all the emblems are gone but got the 1600 and year off the plate in the door. Funny thing is the axles look exactly the same as the ones in my 1300 but they are set up with 20" rubber and the bigger drums. Front 5 lug 70 and ra15 10 lug rear. The frame is much taller crosssection than the 1300, I didn't crawl under and look at the tc very close, kinda sloppy right now. Will get pics this weekend and I will take stuff to try and start it, and a fine file and white paint to pick out the stamping on the id pad. I would have thought the front would have been a rockwell in a truck that big.