"Must have" parts and "nice to have" parts?

[OldTimer]

I am not sure of the size of the Kyosho diff and thrust balls, but i have in stock the following ceramic balls, not had chance to add them to the website yet. But these are what we use in the S4 & S2, and also for the B4.

12 off 3/32" Ceramic diff balls £9.50
6 off 5/64" Ceramic thrust balls £4.50

Or 12 off 3/32" Ceramic diff balls and 6 off 5/64" Ceramic thrust balls for a complete diff - £12

All plus P&P