Update-there IS a bolt in there, but the head is recessed about 1/2in. I think the head is supposed to be exposed when the caliper is compressed, but mine is stuck and pretty much won't move at all. I finally unbolted the bracket that holds the pads from spindle with the caliper still attatched and took the whole mess to a brake shop to see if they could get it apart. I have to go out of town for a few days, so I'll have to wait till Thursday to see if they had any luck.

85 Pickup, Desert tan spray job, 3" Rough Country lift, Marlin shackles+bumper, Chebby igniter, 33x10.5" BFG's