I also made some frame connectors for the car. They are made from 1x2 tubing with 1/8" wall thickness. I cut into the torsion bar x-member and the back frame so the tubing could be slid inside instead of just being welded on the outside. Since the connectors don't weld to the floor, installing the brake/fuel lines and the e-brake cables will be a piece of cake. However, since they don't contact the floor they need a little something extra to increase their strength. This next trick was suggested to me by some of the guys on the E-bodies site who had done the same with theirs. Every 6" I drilled though the tubing with a 3/4" bit. Then I cut some 3/4" round stock(1/8" wall thickness) into 1" pieces. Those pieces were they inserted into the holes and the perimeter was welded top and bottom. Before I had them welded in, I reinstalled the torsion bars so the car was sitting on its suspension.