Find a pack of plastic car clips, for things like the skid plate, bumper, that sort of thing. Whatever style of fuse it uses, get an assortment (10a,15,20,25). A thing of coolant and oil, I would also say a battery tester. And of course, zip-ties, duct(duck) tape, wd-40.

What program did you use to design the part?

Also looks great!