Actually I've been running a 13.5 with the single cell for awhile in my world gt.I've been using all Novak (motor and esc). But this weekend I'll be trying out afew new things. So far this set-up to me is slower than the 4 cell set-up but is lighter.I'll give the information out next week after the state race.
Team Epic/Trinity -Michael Bruce Hobbies-Team CRC ,Kimbrough Products GForce and RJSpeed.
WGT-R, GT Racing USA (17.5 foam),RJSpeed- Legends &Spec Mod, MudBoss and 386 RaceWay.