[MikeN]

The short bed 64-66 does have a frame crossmember that is located differently from the long bed, hence the long bed hitch won't work without modification. I had a Drawtite installed on my 64 C10 short/fleet back in 1996...found the receipt in the glovebox just last week. The Drawtite for a long bed truck works on the short bed with very minor modification...a couple of new holes, and a small notch cut into the frame. No big deal unless you have a show truck or something. The spare tire mount still works fine also. I tow a 69 Chevelle on an 18' open trailer with my truck and the Drawtite hitch.