Mystery Motoplat ?

[DKWRACER]

A friend and I have an unusual motoplat which is on a 76 400 motor. The numbers around the outside of the flywheel are 9600180-1...the stator's numbers are 03058 and 6PS-55W, also interesting in the casting of the stator in the wording "MOTOJAK" ....at one time, there was a guy here in Colorado named "Motoplat Jack" who used to rebuild stators, but I never saw some of his work etc....Any info greatly appreciated !!!!!