Im pretty sure you need the bump stop that bolts to the side of the frame. Its what the over load spring hits. Look at any 3500 frame to see it
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07.5 6.7 Auto SRW SWB QC 4x4 White Lonestar Edition leveled B&W,S&B,DashHawk,4" TBE, and Smarty S-67 14ME Thanks to RSD
