I have the upgraded RC shocks... Don't remember the name of them. When this truck was at a true 6", it rode phenomenally... Better than my 2500HD cranked on Billsteins rides. I'm sure Billsteins would be better but I have no complaints. As far as kit quality, I've had three kits now. The new non torsion drop design is superior to the 88-98 style torsion drops (it's not exactly an apples to apples comparison). I'd opt for the non torsion drop for a cleaner look anyway. As far as customer service, unbeatable. I had a kit come with two passenger side upper control arm drop brackets instead of a driver's side... They overnighted the missing part to me and never asked for the old one back! No proof of purchase or questions asked.