I have the stock mounts and i was thinking the same thing. I should put a chain on it. Post a pic of how you welded the chain brad. For the fill plug, its jb welded in hah. It stripped out so that was my quick fix. Still sealed up good. I seen how you did your skidplate and the mount in the rear is a good idea. Tube arms would work i have seen that dont before. Heres how the frof is built, is it the same as your works? The fror crossmember looks pretty damn strong.