Air for a Cavalier

A buddy of mine has a 1999 Chevy Cavalier. He is want to put some air ride on it. He wanted me to ask, sinse you guys can give a reasonable answer, if he can put air cylinders at all for corners of his car. Or does he have to go with the struts. He wants cans I know that so he was just enguiring. We have all the stuff, Caompressor,fittings,tank,lines.. all that except for the actual suspension. Thanks for all your enquiries