Keep in mind this is a rough draft first fit type of thing that the pictures show, nothing is welded except the top and bottom rails, the end piece you see with the round rod thru it will be cut down to fit on both sides, as far as accessing the engine , one side will just be pinned with a rod that I unpin and the other side will be the hinged side so once I pull the pin on the drivers side the whole bumper will rotate around to the passenger side just like the rear door on the machine does. As far as attaching it to the machine we are going to use some heavy 4" angle that we will drill and tap with fine threads for 3 bolts on the side and 3 bolts on the back for a total of 6 bolts on each side , the hinge and pin side will be welded to that piece of heavy angle.