I have lot's of 3speed flywheels but no 4spds I can easliy find. I'm pretty sure Steve has a few.
What ever you do make sure you machine the surface where the pins are. Otherwise it will not have as much clamping force. SOme machine shops forget to do that.
What ever you do make sure you machine the surface where the pins are. Otherwise it will not have as much clamping force. SOme machine shops forget to do that.