Hi pinion and Dave's specially built driveshaft are nice and probably the BEST way to go. I'm looking at cost and how often do I really use the 4wd. In my case making a square shaft myself is perfect. Kudos to those that have the cash to install the Hi pinion(dont forget the new reverse cut ring and pinion and new bearings $$$$ etc...) and/or Dave's drive shaft. As for OOPS, the heading of the thread says SINGLE CASE, we all probably already know that having the dual cases cuts way down on the angle. But, we are concerned with those of us that have SINGLE t-cases.