I'm right in the same boat with the rest of you. I've got a completed 8.8 sittin on a pair of jackstands, brand new Detroit Truetrac, 3:73's Cobra disc conversion, UPR adjustable U&LCA's new bushings, MM PB in the box waitng to get installed, yet I still can't decide on Springs / Dampers. Vari-Shock has very good info on thier site on calculating spring rates, but you gotta have the dampers and springs to do the calculations, price is attractive for a set of SA with springs ( 600 ) plus 100 for adjustable mounts, but I don't know if their mounts will work with the PB. Obviously MM has good info and items. I was looking at a set of the MM sport dampers, and a set of springs in the 275 300 lb range as a jumping off point. I have the MM full length SF connectors, and I'm planning an 8 point cage, once I get the rear end back in the car.