FASTXR
I use lipo as well . I just use the 4 cell gtb because it fits my car in the middle behind the battery & in FR of the motor . I also noticed some of the oval guys were removing the case & just using heat shrink like the BK'S did .
Ah the 4 cell version of the GTB, I miss read what you said earlier, makes sense that would be a nice light setup and cheaper than buying the 6 cell version.