RE: So, what size is this engine?
actually, looking at it you might be able to get around the points by installing a homelite coil instead of the stock one, I upgraded a chainsaw from points that way, the flywheel had the magnets in the same position so I used the stock flywheel and just replaced the coil. I say homelite because that's what the mounting pattern looks like to me, if you go to your local mower shop you can probably get a used junk power head for like $5...