Need some insight on W124 cv half shaft with ASR

[speedy72t]

I'm helping a friend trying to resurrect a 1994 E320 with traction control. The left rear half shaft is bad. I now forget if it was the inner or outer CV that was bad, but I think outer though.

The axle is out. The aftermarket unit that he bought works, but I discovered the bolts keep backing out as the inner CV is a good 4mm thicker than OEM.

At this point I'm looking for a clean used MB unit. From pictures online it shows that the outer CV should be smooth all the way across for cars with traction control. But what came out of the car has an outer CV that is kind of sectioned/raised.

I found a couple axles, and they match what we pulled. But I'd like the ASR to work so...

I know these cars are getting old. Hopefully someone still here remembers exactly what I'm talking about.

From what I can see peachtree doesn't have these anymore either.

This is a link to the aftermarket units out there. You can see the difference that they show between traction or without traction. I feel like either I'm looking at this in reverse, or they have the pictures reversed.

https://www.showmetheparts.com/trakmotive/

thanks in advance.