Thanks for the replies so far.. it's definately a help

I've got the flywheel off and I took a picture of the shaft.. the shaft is tappered.. and for this reason.. the idea of using a hole saw to cut a hub from the discarded flywheel sounds like a great idea.. (I'll use a drill press) I can just drill a hole in the fabricated hub and red loctite the magnet in.. drill and tap two small holes on the aluminum end cap to screw down the bracket that holds the EI's magnet.. and I'm off to the races.. unless I'm missing something.. I'm still grasping for all the advice I can get here before tackling this project..

the EI on ebay can be ordered with the 14mm plug also

one more question.. can the shaft that protrudes out the back be cut off flush in order to save more weight?