atc125 to atc110 interchange?

[carscomefirst]

Will a 110 head and cam work on an 84 125? And if so, what years? :wondering
thanks
cars

[Vealmonkey]

why don't you just install a complet 110 engine, you just won't have electric start. And I'm not sure if the topends can swap over, and I'm pretty sure they don't on the upright engines.