>>The new mount I got is all metal, and I assume it goes UNDER this black plastic. >>My question? Won't I still have to now cut the black plastic for my CD player din sized radio to mount? If so, what was the purpose of getting the mounting kit? It does not go under your existing black plastic. Your existing assy had the plastic laminated or bonded to the metal frame before it was stamped and welded at the factory. Remove your existing radio mount frame and it should become obvious. The purpose of getting the mounting kit is that you don't have to hack up your original bracket, in case you want the extra points from the concourse judges some day.