Liftabrand also has quality G Body suspension upgrades. You can go to Liftabrand.com or call ask for Tom @ 3204930709 or 18779954382 or email [email protected]. Some 3 inch spindles, rear trailing arms, and heavy duty spring should do you fine. Whatever you do, don't put those knuckles in the springs. It wears them out, and they ride like crap. I recommend taking it to a professional. Tell them what you want to do.