Yeah I am in the same situation. I set up the front suspension with airlift(POS)2b6s. But I dont have enought lift to completly clear 20s...can you believe the airlift 2b6s only get a total of 6.3" of lift compared to the total of 8" of lift of a RE7? not to mention the diameters of the bags...airlifts=6.8" and Slams=7". Dude your best bet is slam specialties.
re6's upper bag plate 5.25" mold lower arm, drill hole. walla done. and dont forget to swap sides with the uppers if your planning on running anything over 20s