For our six-point rollbar, two support tubes travel rearward (through the rear package tray) into the trunk. Just as with the front tubes, heavy-duty steel mounting plates need to be installed. On the passenger's-side trunk bar, we ran into bit of a snag. The O.E.M. spare-tire hold-down brackets were right where the mounting plate needed to go. But, not to worry--ace rollcage-installer Mark Gallimore contoured the plate to go around the stock brackets. Be sure to grind the trunk pan smooth (to remove paint and gunk) to ensure a good weld job.