Building a top spec V3 - anything else I need ?

[andys]

I'm going to start my V3 build soon.
Is there anything - anyone would recommend taking over from my full fat 410, or anything that would be good to buy before building.

I was thinking :

Losi diff o rings for the diffs.
Rubber boots for driveshafts / shocks.
Stainless screw set (which one is best ?)
Tapered pistons for shocks (which ones and from where )

Anything else worth it before its all screwed together ?