Feigao 380c

[TWX]

I currently own a BK warrior 9920 thats running a 7xl in my Revo and sometimes my Emaxx. This setup is wonderful accept now its winter and it's time to race indoors. I was planning on running a team associated T4 stadium truck. It would be a well groomed indoor dirt oval and I would be running foam truck tires (same as rubber 2.2 tires accept foam). I was thinking of running my BK Warrior 9920 in the T4 and powering the truck with a Fiegao 380c off RC-Monster's store. However I am not sure which of the 380c's available would work best. RC-Monster has a 6L, 7T, 8T, and 9T available from what it looks like. The 6L has less k/v than the 7T, which leads me to wonder the differences between the L series and the T series of the 380c. If anyone has any information on what would be best to run for a modified class on brushless that would be great! I will be running either a 6 Cell NiMH (7.2V) or a 2 Cell Lipo (7.4V).

Here are the specs of the associated T4 :
Length: 390mm
Width: 316mm
Weight: 1441g
Wheelbase: 288mm
Internal Gear Ratio: 2.6:1
Drive: 2WD