Yup they are like hens teeth
Whats wrong with yours post up some pics maybe it can be fixed.
I think it was Joe Price that was running a Pilot
Engine converted to a CR500 top end and with a different ignition system ?
Might be time to look for a alternative to the Pilot ignition was it Motoplat that use to make racing ignitions for the FL250's think I seen a few MSD ignitions on the Briggs cars running the 350 based engines think they were something adapted off a personal watercraft application.
Part number of the Pilot flywheel is 31110-HE0-003FLYWHEEL (MITSUBA)
Mitsuba must be the MFG. ?
http://www.mitsuba.co.jp/english/products/MoterCycleAndGeneralUse/AC-generators.htmlCall Ricky Stator see what they say
http://www.rickystator.com/The numbers on the stock flywheel are 8x120 gf-8210 MITSUBA JAPAN