The quality of the parts in the kit was really good, great price from Suncore (alternative sources charging way more with no advantages). I had my local garage fit the kit for $500, it took them about five hours including test drive and check of bolt torques. The ride is, in my opinion, better then the air, just as comfortable nice and firm when cornering and the ride height just right. I think my car is probably now worth every penny more than the kit cost ! Very happy.