If you use the AEM-7 internal electrical apparatus as a "power supply", adapted to fit inside the GG1's carbody, and it's arranged to put out 25 hz AC (or DC) to the traction motors at voltages not much over about 400, it just might work (there's also the issue of current capacity). GG1 motors won't work on any higher frequency than 25 hz without experiencing inductive heating issues and destructive commutation problems. IOW 60 hz would burn up the motors. They will, however, work just fine on frequencies below 25 hz, all the way down to 0, which is DC. Trying to use AEM-7 traction motors is most likely a non-starter because of constraints related to the quill drive's layout. There's also the issues of air compressor and blower motors and auxiliary electrical supply, although these are a lot less significant in comparison to the drive train's power demands. There's no escaping the checkbook problem.