Air Shocks

Since you asked for pros AND cons, I'll state the obvious con. If you use on the air shocks to raise the *** end of the car up 3", it'll result in more load on the upper shock mounts than they were designed for. If I was on a budget and needed to raise the *** end up 3", I'd inquire with a local spring shop to have the rear springs re-arched, or maybe even install a junkyard leaf or two before pumping up a set of air shocks for an extra 3 inches of height.