Have a 2wd pede ( bought in 2011). I just bought a tenshock 401 (4400kv) /hobbywing 120 amp esc combo. I will just run a 2 cell lipo for now. The tenshock has a 5mm shaft, so I know I'll have to get a new pinion gear. Can anyone suggest what gear combo I should be running (pinion and spur)? My main thing is bashing, not running up and down street doing speed runs.