Well I guess they do make some and
would be correct for your coil as Tom
has posted. Got to looking in my files
and this picture shows some black
cloth covering still remaining with
brown cloth covered inside.
I was thinking of the earlier Super Elto
coils that had the rubber insulation.
(Well this coil came off an earlier
motor. Could be a replacement?)
You should go with what Tom has posted.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.