Nitro and oldski the set up your looking for is not what is sold for a basic instalation. You also have to think that the heavier the car the more air you will use to keep ride hight. I just had a talk with one of my clients just yesterday. He has a 01 chevy 3500 dually that had air ride installed and he had mentioned to me that it rode like crap unless you put 500# in it. I told him that it the rear bag setup. But without changing the four link I couldnt help him. But If you take in concideration the weight and the bags used you can get a great ride with good performance. If anyone needs help on this subject or parts even I run Insane Auto Concepts www.finalfab.com. Just call or email and I will do the best I can for you.