Harman Collins magneto

Got a Harman Collins magneto with a pile of other parts (whooohooo). No drive coupler.

Question - Is the coupler as hard to find as the unit itself? Anyone have a picture of what the coupler should look like? I have never seen one. Is this something I could machine up?

Thanks,
Kevin

 

I'm guessing for a flathead?
http://www.speedwaymotors.com/p/1697,280_Harmon-Collins-Magneto-Drives.html

 

Sorry, yep, for a Flathead.

And that's cool as heck that I can still get one new through Speedway! That just made my day. Thanks for posting.

Kevin