The 24 with a PT Norm would be easy for a pulley if you can find an old PT Tilt a Cut thrown out ,It might be worth posting the full crank pulley to China a get some made unless you find one that needs minimal machining to fit.
I see some Honda equipment thrown out MM but it's so cheap to buy on eBay second hand ,I thought I saw new GX35 motors for $80. last Black Friday. I found a couple Honda blowers years ago with GX25 motors.
