Well The Superflex U Joints showed up from Tom Woods Driveshaft.  (These things are pretty nice.)  I got a 1350 and a 1310.  The 1350 is for the bottom and the 1310 is what a nissan tx10 tcase uses. I also put the new front yoke on to replace the one I broke at Harlan. I got the new Yoke from ShakerBuilt.Com.  (These guys are easy to work with)

Here is a photo of the UJoints

OK so I started by putting the UJoints in the Driveshaft.

1310 Installed

1350 Installed

Now I Jacked the Xterra up so the front driveshaft was at full flex (The front wheels where just hanging there)

Now after that I installed the shaft and tested for the yokes binding. and they did. But nothing like the did before. So I took the shaft back out and got the die grinder and cut some metal out (About an 1/16-1/8 of an inch. Shown below

Now I re-installed the shaft and tested for binding and it was a NEGATIVE!  (Close but negative)

So here is the Dshaft installed back at ride height.

So these little buggers help.  Superflex joint gives an extra 10° of angle which equates to 5" of flex at the axle. (What 4xshaft.com says)

Now time to wheelem!