Oh I saw one of those a while ago on youtube, a Maytag bike. I think they're cast iron which wouldn't be the best for a lighter weight bike but if you wanted to build a vintage looking one it would be good. I think they make 120cc opposed twin 2 strokes which would be cool on a bike, probably same as the Maytag with a belt drive and tensioner clutch. Ignore the price for now lol.