the motor should be on the other side ! near the sterring servo. check out the hoabao hyper ss wich is mostly based on the hyper 7 ! ( same transmission )

i drive the hyper 9. good hobao buggy !

when i do my own aluminium motor mount, I use 4 screws to hold the motor, not only 2 as usual. when you have the choice to built it yourself, you can !

what center diff is that ?