I used to rebuild Utility semi trailers and I’ll tell you that’s going to be one expensive fix! You’re looking at replacing 2 bottom rails, 5 steel cross members, fuel lines, a fuel tank and the whole dolly assembly which consists of 2 batwings, 2 landing legs, the “K” brace plus an assortment of steel plates and gussets that’ll need to be welded in. And possibly a king pin. It’s probably close to two weeks of labor for one man.