The FT-19s engine was released in late July 1976 three months delayed
This engine was developed by OMC the beat the Merc 650 XS in the UIM SE class and it did.
New larger pistons, rods, exhaust and three dual port carburetors.
The only way to tell a FT-19s from a stock engine was the little sticker on the rear of the cowling saying FT-19s.
There was also a cooling water hose coming out of the lower cowling
I got the first Evinrude and Bo Nilsson the first Johnson.
We sold many FT-19s from my dealership in Stockholm.
The largest problem was the exhaust bridges in the cylinders. They got hot and sometimes cracked. A new block was expensive and after three / four years OMC stopped building them.

A mix of pictures and the complete parts book.