Elto Pal, 1937-41, would be the most common but parts motors are getting pretty pricey. The Ranger 1938-41, would be the cheapest motor. There plentiful and not a lot of interest in them. Rangers after WW-II have a different magneto. There are some 1hp. Johnson’s from the same time that have that magneto. There is also a $15.00 coil that can be modified to use in that magneto. But what you have coming should have everything you need.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.