More info about the sexy looking 3 cyl. above.
831cc FT-19s powerhead,
The exhaust housing is not a 45ss, it is a shortened production 3-cyl part (same as FT) with the exhaust outlet added.
It used the special sandcast FT-19S powerhead adapter, to be compatible with the special sandcast Mod50 FT/FR exhaust manifold.
45ss swivel and stern brackets
45Sss gearcase
The intended use was for hydros and runabouts in APBA Modified FEH/850cc