Thanks Matt, that helps confirm what I’m thinking. My confusion was because I think I’ve seen some late 60 Series 3F motors with the 3FE style exhaust manifolds we got in the US on FJ62s and had only ever seen these manifolds on 1990+ FJ75s. My data pool for that is admittedly pretty small though. Just getting my ducks in a row so I don’t buy a bunch of wrong parts.yes, all 3F (carb) engines (+1985 globally), so FJ62, FJ70/73/75, FJ80, had those manifolds.
It will bolt right to your cylinder head which is the same. You'll want to use the 3F gasket, 17172-61070. Available in the US actually for less cost then the 2F gasket.