I also brought a set of UE drive cups with shafts off ebay - will let you all know how it goes with the traxxas CVDs- however George16 said it should be fine - so hopefully I wouldn't have to buy the OFNA mutilator outdrives :-)
The UE ones you just bought works best. I think I have 5 sets those for my diffs. UE does not make them anymore.
I don't have part numbers for the Ofna outdrives. They came with the diffs I bought.
I see you bought them from Scott(Billytrucks).
Castle Neu 1520 on 6S LiPo Powered Gmaxx (Nitro Killer)
Predator with OS .21TM
Supermaxx with Mach .26
Revo with OS .18TZ
Kyosho ST-RR Conversion
Ofna CR with Tekin ESC/Motor (2)
Since I'm waiting for the UE cups to arrive, I decided to install the genuine Hot Bodies Out drive Shafts, just to see how off they were. Dunno if you can see it in the pics