You have what looks to be a Speedster but 318 isn’t on any listing I have. 0002 would be serial #2. There was a change in the tag they stamp the S# on in 1930 so my best guess is its a 1929. I’m going to post some links that pertain to this motor. I cant post them all in one response or everything disappears. Here is a link to one of mine running- https://youtu.be/lJ6cXeWWi7g?si=5W9SXiSaLoF8DVlw
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.