From what I know, if it's a C-10, it's a heavy half ton. C-20= heavy 3/4 ton. The longer bed Jerry was talking about is the Longhorn Model. The camper special was heavier suspension set up like a towing package. I don't know to much about the Chevy suspension, as my truck is a GMC 1500 1/2 ton with leaf springs. My truck has extra springs than normal for more weight. I'm pretty sure mine was called a camper special, but I'm not totally sure. Mine is only a 1/2 ton, but the weight plate says that it will handle about 1900 pounds of payload.
