Hi and thanks for the positive feed back GNU Up, BOSCO, For it to affect the tank where its mounted your car would be well and truly written off from the rear. GR8XR6 the way it mounts is if you look under the passenger rear side of car behind the rear wheel, you will see a 12mmx50mm long stud hanging out of the rail, same as the studs that mount your diff and cross members up front, (very strong), there is a 6mm 100x50mm mounting plate that is welded to the top of tanks that is accessed thew a tube that is welded into the tank. (All tanks come with nut for this) also there is rubber on top of this plate that sandwiches between tank and rail. Hope this helps..