No first hand experience, have Hotchkis leaf springs on my car. I saw this kit last weekend at NSRA show in Louisville. I was intrigued by the composite leaf springs. I was amazed by how light they are. Heard good things about RT shocks. Even their entry level shocks are pretty pricey. Kit did seem expensive for what it is but is high quality stuff. My buddy was talking to them about the coil overs on his car. RT crew was very helpful explaining how to troubleshoot his issue (non RT components) rather than pushing their parts to solve the problem. Seemed like a very knowledgeable group. Define what you want the car to be then research the different manufacturers. Pick up the phone and talk with them.