There's currently an active thread on this very thing:
Thanks for the heads up! A motorcycle stator generally only puts out 20 volts at idle, and 70 or so at 5000 RPM, so it seems the IMA motor is not suited to a motorcycle regulator rectifier.I think your might be on the wrong track with the motorcycle regulator thingy.
The IMA motor puts out between 50-320V DC when rectified and smoothed.
So prob about 40-250v AC or so..
The alternator thread mentioned also shows a method which uses the stock IMA motor, a meanwell power supply and the 3 phase rectifier, which which when combined with the ecm fooler gets rid of all the heavy stuff in the back..
I suggest for simplicity put your solution in the back and use the oem wires available.
That way you can always put the ima stuff back in again easily later..