Worked with Superatv and they said they use the RZR 800 front outer cv's, with a +7in axle, and I am not sure what they use for inner CV but this ends up making an XP 900 front axle set. So, the RZR 800 outer fronts should work fine. There are some differences as the Polaris part numbers are not the same but apparently this is for some other reason/not critical. Just bit the bullet as out of time to continue the search and bought two new CVs ones they sell at a fair price. Will know in a couple weeks if they indeed do work out ok ...
If anyone actually has both these and could do a visual omparison in the meantime that would be great. It might even be something like needing to use a different castle nut, etc.