I wouldn't risk it especially if the tank is in power mode. The sports tuned US version is 27T motor with advanced timing. Dual motors is taxing on esc at best of times. The one in DMD is designed for 2 27T motors only. Tanks also have poor airflow compared to RC cars. If you want to risk a $300 DMD though ir's entirely up to you Keep in mind I'm not even sure if the DMD would work correctly with something not close to original motor specs. The newer MFU/DMD units tamiya makes (such as the truck MFU) detects pulses from the motor and adjusts the sounds accordingly.If this is the case with Leo DMD, you will have the sounds not syncing with the motor depending on how different the motors are.

Personally I'm leaning towards 2 Trinity D6 custom wand at 27T. Just needs to investigate if Team Orion will do custom winds for the V2, and whether the V2 actually produces more torque at a higher wind like conventional motors or less torque and power like the Cobalt.