I found 12V 0.5A 40mm x40mm x28mm Fan in the basement of Golden Shopping Centre, I intall 2, one for motor, one for ESC, and I use dedicated independent 11.1 V 3c Lipo to drive them, will test it out soon
PS: I run my GT8LE with LRP ESC, Tenshock 24500kv motor, 21 teeth motor, others original
8 boy motors are all designed for buggies which run in rough conditions, the whole motors are enclosed, no ventilated site unlike 10 boy, 8 boy motors required much powerful fans if u really want to run them fast in daytime without cooking u motors