So I have an NV 4500 in my chevy cummins..... the 208 transfer case that is attached to it is slowly leaking and I want to trade it out for an NP 205 when 208 transfer case gives out. I found one today but cannot decide whether its a figure 8 or round pattern.

 

The pattern you are looking for is on the other side of the adapter/mounting-foot piece.


The 85-91 version has the round pattern. Crewcabs have a fixed yoke instead of a slip. 91 is unique as it has a VSS instead of mechanical speedo drive.