I wanna do this too.

Is the caliper cast steel or cast iron? Could i weld the nuts to the caliper ears so i just put the bolts in and tighten?

I'm big on welding nuts to stuff so i don't have to use two wrenches.

I recently rebuilt a frame and welded nuts to the frame mounts for the bed. Then i drilled holes down through the bed so you just drop the bolts in through the top like on a Ford Ranger bed.