Mechanically, the one-tons are a different animal from their 3/4-ton cousins. The frame is the 1-1/2 ton one with pickup-specific axles and wheels, same wheel base. Springs, front and rear, are 2 inch, like the 1-1/2 ton; driveline is open with a carrier bearing in the middle, like the 1-1/2 ton; Front axle is unique to 1-ton as are king-pins and hubs, tie-rod-ends and drag link. Brakes are unique. Look for Bendix brakes, with which some of the earlier one have been retro-fitted. That's worth several hundred dollars extra. All in all, its a much heavier duty pickup and they are hard to wear out. With care it'll likely outlast any of us.
