I sprayed mine with truck bed liner but I planned on backing into small trees and such in tight spaces wile working in the bush. Mine was more to protect the plastic and it’s held up pretty good. A little bent and dinged but I expected it lol. Yours turned out looking great. Depending on what kinda abuse it will see I guess should tell ya how much you want to put into it. Don’t make the mistake I did when mounting it. Mine has so little clearance that I’m 1/4 inch off the rear tires when I dump the box. Worked great and still no problem other then when working on it I can’t pull the pin and put the box straight up. I’d like to make another new one and seeing yours has motivated me a bit more. First and probably next is oem half doors plus I’m going to make uppers. Ordering doors this week and should have by Friday or Saturday.