i could be and probably wrong, but i believe the amf years were 73-79?
at any rate, the were pretty good bikes for the time.amf introduced the japanese parts on a harley that we still pay for today.
nippon denso instruments
most electrical (hitachi anyone?)
owned two amf sportsters and both died horrible deaths because of operator, not amf!!!!!!
btw, mikuni carbs were the savior to tuning these bikes!!