Well, maybe they are going to send you a spacer, I personally don't like them, and won't use them.
10bolt carriers split at 2.56 & down / 2.76 & up.
12bolt trucks split at 2.73 & down / 2.76 to 3.42 / 3.73 & up
My recommendation is to talk to www.randysringandpinion.com I have had excellent service from them, and they know their stuff. They have a 4x4 sale going on right now too. Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project