Motor plate or elephant ears?
No matter which you go with make sure you run supports from the cage through the firewall. To the front rails dirrectly behind or to the plate or ears. applying the torque to the front of the rail without support is not a good idea. Attacment of a motor to the K pulls up on the rail in the rear also closer to the firewall. I have seen alot of guys twist ther noses running these set ups with out supporting for them. Just a freindly suggestion. Also the plate is better but involves more reconfiguration of the motor assembly. the ears are easy and just as effective if the correct strength attaching hardware is used. Just my experience but I am not claiming to be god. Take other suggestions and run with it.