i just got an escalade front for my 98 silverado. the only things that came with the kit for the bumper was the bumper, bumper absorber, and bumper re-enforcement. i dont know if the escalade re-enforcement is supposed to bolt right up to the existing bumper mounting bracket (the one that is bolted to the frame) or what, but if so, mine doesnt. do i need to buy the escalade bumper mounting brackets, or am i supposed to use the stock existing ones? thanks so much.