I have about the 5/8 gap between the bumper and the front of the fender. I had the whole thing tore apart to the radiator core. I assembled most of the bumper assembly on the floor. When I was ready to re-install I basically hung the bumper from the insulators that are threaded on both ends and have the rubber between them. Once I got it settled from side to side I swung the assembly back to attach the bumper brackets to the frame. I had never done anything like this before, but when I did it this way it made it a bit easier for me. I was able to do most by myself.