Installing the Tom Wood’s NP242 slip-yoke eliminator is maybe one of the easiest transfer case modifications we have experienced. It’s easier than a NP231 slip-yoke eliminator because the back of the front output on a NP242 has a snap ring you can remove. This allows the mainshaft, chain, and front drive gear to be removed and installed all at once. Just follow Wood’s instructions and you’ll be fine. Oh and a good set of snap ring pliers are very helpful. Don’t forget to send Tom Wood’s Custom Drive Shafts your old NP242 mainshaft. It has a large core charge.