I only have a couple of hundred miles on my new RST rally package(big black 22 inchers). Now I'm a car guy and all the people around me are floored that I bought a truck, but most forget my first vehicle was a new 1980 black Chevy LUV 4x4 with white wheels, white roll bar and black tonneau, really styling in those days....lol. Anyways, I know it's a truck and the rear springs are real truck springs. I have just ordered Bilsein 5100 rear shocks and if that doesn't calm the rear end I'm going to take one leaf out of the spring pack(each side of course}, confident that will give me the car like ride I desire and if I need extra load capacity, air bags are an ez install that I have done before on my Astro"s back in the days of towing 4 snowmobiles and our family of 6.