Xray E-XB8 spurquestion (plastic)

[ogrfre01]

Hi, this is my first post on this forum.
Im from Sweden so my english/spelling is´nt great but here goes.
I recently bought a Xray XB8 and is turning it to a brushless setup. I have heard from many peolpe that one should use a plastic spur... I know you can use the hardened pinions from rc-monster, that is what i entend to do. But a also want to get a plastic spur.....

Does the central diff (with plastic spur) from a Kyosho MP777 fit on the XB8? The bearings has the same measurement så they fit in atleast one of the mount, but is there the same distance between the bearings? if so they shold fit like a glove? Does anyone know?

By the way, here is a pic of the victim stripped:


thanks!