Vinny the bumpers are different and have you have to drill some holes to work. The white bumper from billy's car I brought back to the house from T's shop and it had been modded to fit the car but didn't have a front mount cause it wouldn't fit. The cover and support that went on that car have since been trashed . Best thing to do is just get some steel and weld it up in the center. On mine I hacked the cover and then the holes in the middle were cut straight across and I welded in some flat steel on the ends and areas that were open.
Next time you come up bring the car or bring the bumper ends and the usdm factory brackets, Mine are going to 14bcrazy, That way we can just mount on mine and weld in some steel. Oh steel bring some of that also. Box tubing, 4 pieces or round 1 inch or so , You got the idea.