I still don't believe that there is anything unique about the VX assembly except the tulip fitting is a TINY bit bigger, and if you are replacing the entire assembly, it shouldn't matter. As a matter of fact it has to be the same. We have the same front diff, hence the fact that the lockers are the same between all the zus. They are all 17 spline outer counts since like 1987 or something. They are the same length, hence I have frankenstein CVs. There are only 3 Zu lengths. So, having said that, I don't know how much merlin knows about these things other than what a computer tells him that the part numbers are different. The VX does have a unique configuration taking the tulip fitting into account.
As for me having a spare, I do, I have 6 CV joints, one consisting of the entire drivers shaft. He already PMed me. I am waiting for the cost for the RCV set, and I will sell all my spares hopefully for enough to cover the cost of a pair of those new ones and I will order another garbage aftermarket one for a trail spare.
I told him to drive it in 2wd and wait a bit. Then I can get him an OEM set if this deal goes through.