You don't have to purchase the entire kit, although it may be cheaper, you are able to purchase parts separately. You can get the underbody kit, wing spoiler, or wheels. Some dealers will not part it out, but others are able to. Here's a link to the wing spoiler and one for the Aspec Wheels from Curry Acura. BTW,There are different Aspec wheels. The number to the Curry Acura Parts Store @ 866 799-0087 .... Ask for John or Joe.