Pontiac
I recently bought a little koritz weedeater motor off of ebay. I can't find what size it is. but I have narrowed it down by the serial # to either a 16 or 20cc. This is a old but brand new motor. It has points and all. From what I gather it was in an estate sale and had been stuck up in the rafters of a garage and forgotten about. I got it for 20 bucks pretty good deal.
I was originally going to use this but the point setup is on the back of the motor so I would have do convert to electronic ingition. That's not a bad thing but I haven't done it before. so I stuck that motor aside for a future project. and went with this toro.