Eh ! That's a nice truck. What is your reference ?
Cool concept, and nice work so far. After you get finished with this one, you might think about making lots of "upgrade" items, and assemble a fleet of badass trucks. Might even try selling them in a package on some store. And just wait till you get to the texturing, that's going to be a lot of fun.
Might try overlapping the scrap paneling on the baking version, so the pieces aren't so much tiled as assembled. Like the door on your second piece of reference.