I have an '05 Armada, and had great success stiffening up the front sway bar with 4:1 foam insulation can. I have both rockers fully cleaned of the mouse-house fabric in the fronts, and figure the inner cavity of the rocker that's the widest would be good candidates for the foam to help stiffen up the ride. I have the rear wheel wells off, and everything is stripped, so should be able to see it filling up nicely. I'll put screws in place where I can, and tape elsewhere. Wondering if anyone else has had positive results, and tips on technique. Thanks, Eric.