pic: 2016 Offseason Drive Gearbox

[ASD20]

It's nice to have an identical front and back plate, but the top of your front plate will be weaker than the back plate because it doesn't have the added strength of the CIM. I don't know whether or not it will be strong enough, but I've learned the hard way that removing a motor removes a lot of strength. Plus, you could probably even still use just one part file and just CAM it twice, if that's a concern.