Hi Onekiwi,
I run the std 2-3 cell 120a v2.1 in my losi with a 10.5 and no fan in mid motor config.You are paying extra against the std version for the 1s booster circuit for no reason other than if you wanted to use it in 1/12th or mardave racing on 1s?
Mine fits fine and performs great
I can email pics if you like...
cheers
dave