Alright, enough time has passed and more parts have been ordered and test fitted so its time to update the thread.
Lets start with the QX56/QX80 CV Axles.
I am going to include photos of the three axles used by the Infiniti and Nissan SUV's and Trucks
Frontier, Xterra, Pathfinder CV Axle
Titan, Armada CV Axle
QX56/QX80 CV Axle
Immediately you will notice that they all have different compressed lengths.
the Titan/Armada CV axles use a 6 bolt flange instead of a spline drive that inserts into the axle. The flange shortens the compressed length of the CV Axle because there is also a flange on the differential that it mates to. When the two flanges are mated together, the total length of the CV axle is close to 27 23/32 inches. The same length as the Infiniti Axles. This is true because both the Titans and QX56/QX80s have the same width in the front.
The Infiniti Axles use a spline drive to connect to the front differential. This is because on some of the Infiniti SUV's, they used the R180 Front Differential. The same differential as the Frontier, Xterra, and Pathfinder. When you titan swap on a Frontier, Xterra, or Pathfinder and want to keep the the R180 Differential, you will have to use these Axles. NI-8433 is the part number for them.
The Frontier, Xterra, Pathfinder CV Axle is the axle used on stock width suspension Frontiers, Xterras, and Pathfinders.
So, here is one of the Axles test fitted on my drop bracket titan swap kit.
One thing you'll notice in this next picture is the clearance between the ball joint and CV axle. It wont look like this once it is installed on the truck because the lower control arm and cv axle dont sit at a perfectly straight angle. Thus creating more room for a grease fitting on the lower ball joint.
End of Part 1