i am puttin bags on my silverado 4x4 how can i lower this truck? i have it lowered 3 inches with torsion bar keys but i want to lay it out. i have torsion bars incase u didn't notice so i can't chnage my coils or get spindles. will new control arms work. they don't have them for my truck but they make them for 4x4 suburbans which r the same. also will the torsion bar keys even help when i loosen them all the way down?