I think we havea "For Sale" and a "Wanted to Buy" forums. Have U listed and checked there? Flee bay, the other appropreate places: broncos on line (must B ahundred)? Nota FSB guy but they do'em the same way:
U can use anything on the inside, just drill the holes - place/sz correctly. Back up w/bolts, lock-tite. 1/8th inch plate. Ever seen one? Might need bent some?
How bout aftr mrkt? Or do you want oem? Some are big'n funky but they do the job (expensive but durable). Good Luck w/yer search !