my bad....i thought that after someone mentioned the back spacing of the wheels you were talking about spacers for the wheels.
There also several companies that offer the coil spacer (leveling kit) Superlift has one I know. From what I heard, Hellbent Steel makes a good one too.
Dodge - Hell Bent Steel
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2007 3500 QCLB, 5.9, ISSPRO, AFE Stage 2, AF1 intake horn, Smarty, SB 3600#, Straight Piped with 6" Mitres, 6" lift, Bilstein 5100s/dual steering stabs., trac bars 37" BFG M/Ts,
CUMMINS FORUM STICKER!May 2009 ROTM-Thanks to James @ RSD for stepping up!
2006 3500 QC Bighorn, 6 speed, No silencer ring, B&W turnover, other than that, stock
"I Caught that diesel thing, now it stings when I pee"