85 Stepside Rear Bumper Inside Brackets
 

Does anyone know where to get a set of the inside brackets for the rear bumper for a 85 C10 stepside?

When we purchase the truck it had the wrong bumper on it. We purchased a new bumper from LMC but they only carry the outside brackets. I purchased a set of inside brackets for a fleetside but they don't fit. I check the local salvage yards but there are no stepside. :(

Any help would be greatly appreciated.