I made two center mounts for my mp777,
I have yet to run the buggy (just finally ordered the cells), one is similar to the pictures above, only i started with 1/2 thick Aluminum and milled out 1/4 of it leaving a 3/8 around the edges, then milled the area around the motor itsleft to only 1/8 thick.... I will try to find some pictures... I accidentally cut the screw slots alittle to close to the motor hole, so I decided to try using come clamps form mega motors to mont on the casing of the motor instead of the endbell (check my early posts in the buggy section for pictures)