Let me impart some of my wisdom onto you. Have you ever heard someone tell you, "It can't be done" or "It will not work?" To me, that is music to my ears. Too often that means the other guy was just too lazy or too stupid to achieve the desired end results. Don't always accept things for face value. With that in mind, I began my journey of doing something "that can't be done." Granted, modifying cv halfshafts is not rocket science, but I was told that special shafts would have to be made and I have found a way to use OEM pieces to make this conversion work. We just won't consider the spacer that has to be machined as non-OEM stuff. WHOOPS! Anyway, we know that with the VLSD we are forced to use the input shafts that slide into the diff because they are special to the VLSD. We also know that the VLSD shafts are way too long to use in the 240Z. Here was my philosophy in doing this conversion. I needed to use the VLSD input shafts for the diff side and I wanted to use the 280zxT companion flange and outer CV on the stub axle side. The 280zxT companion flange can be used with the 240Z stub axle and allows for the outer CV from the 280zxT to bolt to it. Now, here is where the secret comes in! I needed to find a shaft that used the race/cage design on the diff side and was compatible with the input shaft and that had the tripod design on the stub axle side and was compatible with the 280zxT outer CV. What was the magical shaft, 84-89 AMC Eagle 6 cylinder front CV. I will need to get the specific part #'s so that you can do this swap if you want. Let me just put down some info off the top of my head for now until I get the part #s with some explanatory pics. On the diff side, you will use the input shaft and the cage from the VLSD, I believe it is a #175 'cage.' You will use the #174 'race' that comes on the 84-89 AMC Eagle 6 cylinder CV. Don't worry, they are compatible. The #174 and #175 'race' only differ in the ID and # of splines. On the stub axle side, you will want to use the tripod from the 84-89 AMC Eagle 6 cylinder front CV and the case from the 280zx turbo. The same is true for this side, even though they have different part #'s they are compatible. Do not try to use the 4 cylinder CV stuff, it will not work. I will try to update with part #'s and a better explanation soon. This should be a good start for now.

Here is the specific information to do the VLSD swap

***Input shaft(diff)- must use from VLSD
***Cage(diff side)- #175 cage(from VLSD)
***Race(diff side)- #174 race (from 80-87 AMC Eagle 4WD 4cyl)
***Shaft- OEM Replacement Axle # 87-7699-0 (from 80-87 AMC Eagle 4WD 4cyl) (from 80-83 AMC Eagle 4WD 6cyl)
***Complete Tripod(wheel side)- # 87-7801-0 (from 80-87 AMC Eagle 4WD 4cyl)
***Tripod Housing(wheel side)- 280zxt

So, using the AMC shaft the #174 race is placed on the shaft for the diff side and is compatible with the #175 cage. The complete tripod from the 80-87 AMC Eagle 4WD 4cyl fits onto the shaft and is also compatible with the 280zxt tripod housing. Whala....you have the shaft that works. The shaft is 13" long. As I said before you will want to use the 240z stub axle with the 280zxt companion flange and the passenger side will require a .5" spacer. Good Luck.