Nissan comp lsd driveshaft compatibility???

The 3.36 open diff rear end that came with my car had it. The 4.11 open diff rear end I have on the car has it too. What am I talking about?

I am talking about the type of open diff where the halfshaft ends actually attach to it by way of one long (5") 10mm sized bolts for each halfshaft end. To get at them you actually have to separate the rest of the halfshaft from the end. Ok so everybody is following up to now right?

Now my 4.375 open diff rear and the Nissan Comp LSD I just got in the mail from half way across the world apparently utilize different ends for the halfshafts. They are different in the sense that they are held in there by way of a circlip, so the halfshaft end should have a groove cut in for the circlip to snap into. My question is where do I get those halfshaft ends to use with my halfshafts????

OR should I take my halfshaft ends to my trusty machinist and have him cut a groove in the end of them so that they will snap into place? The number of teeth between my spare set of ends and the LSD is the same....

Thanks all.

-e