ok kl... i will try and get some measuring done.. i was thinking of running the lightning centre diff as i am converting to those diffs anyway...
http://www2.towerhobbies.com/cgi-bin...?&I=LXLGX1&P=7
looks like you could use that spur pretty easy (not sure on pitch) or swap it with a 32p spur
im currently using this Carbon Fibre chassis - (cant find like :013: ) but i may use the stock tranny plate as it is more solid