Sounds like you will need some diff plates as well. The bits you have listed will make your gearbox pretty bulletproof. The ansmann nylon idlers are good to, I run those in my x2c and haven't had any problems.
Diff plates, make sure they are nice and flat before you rebuild. I always fallten mine down by using 400 grit wet and dry, then 600 grit and finishing with either 1000 grti and then some 1200 to polish it off. I do this straight out of the packet. Xray diff plates can be used as well, they are a straight fit and are rumored to be a little harder wearing, although I am still testin this. Have had no major problems with the standard ansmann ones though.
Before you re-build give the diff spring a good few squeezes with a pair of pliers just to make it a bit compressed. Helps with setting the diff up when you have re-built it.
Check the videos out on this thread in rc tech for how to set up your diff properly and run it in.
http://www.rctech.net/forum/electric...er-clutch.html
Hope this helps
