The guys have alot of good advise and answers so far. I have a 1951 3800, and I feel like I can send some good advise too. They're right about the 5 lug wheels in the rear, it should have 8. The lights on top were definitely added. It's hard for me to tell exactly what engine is in it, but it doesn't look like a 216. The cool part about the 1 tons is the fact that each one is different due to the add-ons. I'd be curious to see if it was purchased as a cab & chassis, or that's a factory grain bed (at least that's what it looks like). The truck is in great shape and should be fun to get rolling. Most of the chassis parts are readily available, and some are compatible with the 3/4 tons. Unfortunately, you'll find that they're more expensive than the 1/2 tons. Obviously, interior/body parts are the same as the 1/2 tons. I love our 1 tons because they're unique. Check mine out for reference. I paid $525 and I've invested close to $2000 to get it running and completely replaced all of the brake components. I still need to replace the tires, and if you stick with the 17 inch oe, they run over $100 per tire! Check the forums, alot of guys have good suggestions for converting to other sizes. Good luck with your project,...don't pass on the opportunity!