If you put an open driveline on a torque tube axle housing, you need to do something to eliminate the pivot mounts on the axle housing. Either cut them off and weld on spring pads, paying attention to driveline angles, or set the driveline angle and weld the pivots solid, which might be a little messy when the rubber in it starts melting. With the torque tube gone, you need something to resist the torque (springs or so-called traction bars.)
