you may not be happy with air shocks. they ride pretty stiff. a good set of gas shocks ride best in these IMO.
2" sounds too small to me. someone told me 5" was spec from rubber snubber to axle, but that may not be true, as the book spec is measured from the rocker to the ground and is ~8" with stock tires. (mine is jacked up by the frame right now so i cant measure anything)
coil overs would be more comfy than air shocks, but you can probably get the new springs rearched to ride higher.
or you might also be able to change wheels to a different backspace and/or tire width so the quarters dont hit the tires. technically it should be able to bottom on the rubber bumpers without tearing up the tire. (mine wont, but it rides kinda high in back)
