gotnitro beat me to it but I also got chain binders from Kit Form Services, they are photo etched metal. Just replace the styrene pins with something like paperclips (you'll see). Also got some scale chain.
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.
Ready to see some lights! The side marker lights are darker than I want and the camera makes them look even darker. I used an orange sharpie to make them darker and Future polish to hold the covers on and the Future polish made the Sharpie darker. I can fix it, just time consuming.
I used peices of an antenna to detail the engine and really like how it turned out. I made radiator supports using paperclips and hood supports with 32 gauge wire. I also used nylon screen to give the radiator more texture.