My personal exsperiance with air-suspension sucked. Which is basically the same thing just useing air-struts instead of bags. It was horrible. Ruined my suspension. Wires all over. Kept going back and back. Ruined exhaust. Not safe. Bags kept on poping. Costed way overly priced. And the cheap blow-jax's. You get what you pay for heard from a guy who's friend had them. Which was bad. It is for show man. Drive it 2-3 times a week at max. Not a daily-driver thing man. 18's 17's 19's. All the same thing. Heavy. You wont feel a performance from switching to 1 pound lighter. Just get a nice suspension set up. Like Spings, and shocks, camber kit if needed. Or go get some nice coilovers. Dont waste you money on it.
Jon