Looking good so far. Make sure your motor doesn't flex when pushing the rear end from left to right or top to bottom. Otherwise your pinion and spur will wear out quickly. What center diff bulks did you use? Still using the mantis center diff? You really have to secure the enbell of your Feigao (RCMonster heatsink for example). The endbell of my Neu 1512 loosened itself after some frontal crashes with the motor placed in the same position. The second drawback with this motor position is dirt/stones projected directly on the motor. You might want to think about some kind of mud guard to protect your motor (especially the bearing of your endbell).
Let them talk trash ... when they see it accelerating they might want to throw their nitro motors in the trash right away

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