XRAY - Model racing cars

Hello everyone,,
We run a class called Scale TC which is for scale looking body shells. One of the rules is running a brushed, fixed timing motor ( we run this class indoors mainly to keep speeds down and limit damage with less experienced racers). However with the fixed timing motors there are only two opposing motor screw holes so cannot use them in the T4 as it has only the two lower motor holes which do not exist on the fixed timing motors.

My question is....is there an alternative motor mount that can be used in the T4 to allow the use of these fixed timing motors?