I don't know of anyplace that sells pinions that big short of a special order. There is a guy over at the Traxxas forums who makes his own large pinions: http://monster.traxxas.com/showthread.php?t=355002
the pinions from kershaws aren't too bad, I ordered a couple. you could get them from SDP-SI.com as well.
No the pinions are the only really good thing he has. A friend bought his 700 motor mount kit. The motors were used and burn out in a few minutes and the plate was poor quality and that's putting it nice.
I was looking at Kershaw's Plastic ones and thinking, if they were available in mod 1 and could handle the real power of brushless, might be a good alternitive to the plastic spur, at least cheaper to keep a few and replace
Work because i gotta, play because i wanna
People here hate Nitro, I love it. I start it, run it about 50 ft from me and it dies, I go after it. Perfect exercise