The stock Dodge shaft from the bottom of the column to the steering box has a rag joint used to reduce vibration transmittal. These shafts often wear out within 10,000 miles of stock use and give the truck a very sloppy style. Borgeson replaces the rag joint at the stock box with the company’s own top-quality needle bearing U-joint and keeps the stock double-D (DD) coupling as well as a collapsible shaft for safety. If you have to keep your stock shaft, it can be modified for the new box. Our advice: Just replace it.