I'm looking for a carbon fiber upper chassis (top plate) for my N Rustler.
Have checked both New Era and SS RC Racing - both seem to be permanently out of stock (or at least for past several weeks).
At this point I'd settle for aluminum, looked at RD, also out of stock.
Have been watching ebay - nothing there.
Email RD racing products and ask. I emailed them a couple of months ago and they had the Blue Upper chassis available.
I ordered it and the had it to my house in just a few days, I highly recomend them and you might luck out like I did.
If you're still looking, looks like it's back in stock (On Aug 25th, 2013 any way):
Me, I'm tempted to get the lower chassis as mine is seriously getting beaten up...
He Who Dies With the Most Toys Wins.