I think his avalanche is going to be different than your leaf sprung truck....

but now I'm just curious, what did you change in the back of your rcsb? Just the bushings in the eyes of the leafpack and maybe rear shackles? I cannot think of anywhere else you could go to poly...

and what setting you run your qa1's on? I like mine stiff up front, but now thinking of going a bit softer out back...