The carb fuel fitting on the left is referred to as the Banjo fitting
and would be correct for a Scout. Also correct for 37 Pal and
the early1938 Pal’s #4253. Later #4253 motors used a 90 degree
compression fitting like the carb on the right. Several other
motors also used the Banjo fitting but it was pretty much gone by
1938, the early Pal, #4253 being one exception. The 1938 -41 Pal
#4203 would have the a 90 degree compression fitting. Over the
years parts can get moved around to keep motors running.
By the way I wouldn’t expect the paint to last too long on the
exhaust pipe if you plan on running it unless you use some of that
high temp exhaust manifold paint.
Tubs
.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.