Rear diff pinion bearin 300tdi

I have got a set of disco axles on my fender but the ar one has lots of play in the pinion, about 10mm worth. I'm happy to take it apart and rebuild but don't want to strip, order and wait then rebuild, I want to do it all at once so am after advice on what bits to replace. It all works still, no noises e.t.c. I only noticed it as I was replacing the oil seal...

Also does anyone know if the diff is the same as a 200tdi fender diff as I still have my old axles...

And finally wheres the best place to get the bits from?

Cheers

try googling 539706g and 539707g for pinion ,rtc3095 for 24 spline diff carrier brgs or rtc2726 10 spline