MOPED ARMY

Thanks for all the advice i have a qt head which a friend of mine milled it out really nice so hey well give it a try.I have towny motors also about 5 qt bottom ends so alot of options.A friend of mine also claims he used the pw80 top end on his towny motor with a few mods so he keeps askin why sweat the yt60 top end...Does anyone know anything about this.He lives a few 100 miles from me or id just go check it out.