FYI - that motor mount only works with the G2 chassis brace and braces. The G3 braces don't have the mounting holes on the chassis braces and also don't have the slot on the lower plate to allow this to fit. There is also quite a bit of flex in that particular mounting position.
Thanks Mike. I got a G2 chassis with a Gorillamax gearbox. I am trying to experiment with different motors and finding it difficult to mount a chunky C50 Hacker. I have tried Feigao, Lehner, Neu and just want to experiment with the different attributes of each motor to compare speed, accleration, temps, current consumption etc. With the Hacker I am limited to a 72 Spur gear and the one or two different pinions.