well i did a bit of research on these as i just did a 2 inch spindle on my RST, the Mcgaughtys claims you can run a 16" inch or bigger wheel while the belltech is a 17 or bigger but i will never run anything less than a 20 so it didnt matter so i bought belltechs locally from a shop i worked as as they couldnt get mcgaughtys or i would have gone that route. also with the belltech kit they expect you to cut your balljoint stud A LOT and use a tiny quarter inch thick nut to hold it on... no thanks... so i left it stock length and i have less than an inch from the bottom of the balljoint nut to the wheel but it dropped it two inches 8P. ahah.
09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,