oh sounds very promising then Marvin... Will look in to this both me and my dad run Nitro 9's and he's already decided to go brushless im pricing it for him now. Cool that will save a packet then on all the 9e parts.
Also a great way to solve the gaurds issue use the standard chassis!!
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Mugen MBX5 conversion
LRP Vortex 8 motor
MMM
4c 5000 mah lipo's
RC-Monster bling
I think airflow may not be too bad as the stock body still is not fully closed up to the chassis, so you would get some airflow there, and you could vent the window probably too. Probably temp issue as much as a sealed in body design.