It's a 51, 5 window, 1 ton, 350 engine, SM420 trans, 14 bolt rear axle, 19.5 rims with homemade flat bed. I've owned the truck for about 5 years now. It was an all original truck when i purchased it but the 216 was pretty much used up. The gentleman I purchased it from said that it came out of Washington state and I found a couple items in the truck to back up his claim. It is a very solid truck. I'm already registered at the Lebanon show so I will look you guys up!