Quote Originally Posted by daytonagary View Post
the 4 casters under peice of plywood and just two 2 x 12's cut to length and stood on side and positioned exactly where the frame sits. bolt all of this together using lag bolts up through plywood into bottom of 2 x 12 and down through the body mounting bolts in floor of car into the 2 x 12. this lets you paint the bottom of body on same dolly as only areas where frame will be sitting won't get paint.
Gary, that one scares me with the 2x12's on edge, held by lag bolts up through the base. It wouldn't take much side force on the body to split those 2x12's at the bolts, and lay the whole thing over on the plywood - like moving the body to the side. Glad it's worked for you but I think you're dancing with the devil without at least some cross bracing between the lateral 2x12's.