Glad you reworked the fenders, looks much better. A big Texas bumper like the 1 on my truck will fit nice. I got my bumper custom made from the ebay seller in post #77 but I don't think his brake is big enough to do a 14th scale. You should use 1/16 stainless. Harbor Freight has 2 different sized breaks cheap but I don't know how good they are.
Here's a high traffic forum for the King Hauler. If you havn't seen it you should spend some time there, many impressive builds.