Order of installation: Torque boxes then Sub connectors, or vice versa

leblanc said
torque boxes are like triangular boxes which are welded by the start of the frame part of the leaf springs(where the springs are bolted) and they help with the handling of the torque coming from the rear end. If you have anything over a 340 with decent power you should have them, but they are only an option. (racers usually use at least this and sometimes more)

ok thanks. my car is going to have a little more than a 340ci im going with 345ci (modern hemi, that will make about 600HP when on nitrous) we were looking at relocating the springs then, after looking at a few threads we are now going to 4 link the car.