KYB are good shocks but in my experience too stiff. Air bags help support weight but not dampen the suspension movement. Bilsteins are the only choice. Most factory off-road suspensions, Toyota, GM, Dodge Power Wagon, etc. use them. I have had them on Two Saabs (factory installed on our Turbo), two Jeep Cherokees and one Dodge pickup.
Don (KD6UVT) & Gail Williams
What do you want to be in life, a spectator or a participant?