So whats the difference between the 2" Superlift kit and the 2" Rough Country kit? My kit also replaces the upper arms but I am at the limits of the cv shafts. I am getting tired of replacing them twice a year. I may go to a 5 or 6 inch kit in order to be able to drop the front diff.

 

not sure about Rough Country kit. Installed Superlift kit on a 2000 Blazer ZR2 never had any problem with cv shafts

 

I believe ZR2s have a 4" wider wheel stance... which would be a 2" longer cv shaft. Doesnt sound like much, but the cv shaft anglewould not be as great for the same amount of lift.

 

Yeah that Zr2 throws it out the window since we only share some basic designs. Your wheel tract is wider so that 2 inches helps out on angles.