you can have reserve tanks that hold air so you dont have to run the compressor all the time....you can also have eletric driven compressor, or you can go the new route people are taking and thats nitogen tanks with 1/2 inch lines it makes it fast....but if this is goin in a car if you wanna save some money look into air cylinders

some sites of interest

http://www.ridetech.com/
http://www.classicperform.com/air-ri...suspension.htm
http://www.minitruckinweb.com/tech/0405mt_bagged/
http://www.airbagit.com/

hope this helps

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