Just thought I'd post this here primarily for Neil but also for others who have an interest in Evinrude but may not have known that they also made inboards.
This particular unit is a 1922 Evinrude DD, twin cylinder, 4.5hp at about 1,500rpm, serial number DD66070. There were a total of 3,222 of these made between 1916 and 1927, so it's fair to say that they're rare in the US and extremely rare in Aus.
There are a few missing parts eg primer cups and grease cups, that I should be able to source locally. The flywheel magneto is also missing so it wont run as is, however to get around that I will build a buzz coil similar to that used on the earlier outboards, T model Fords etc.
Enough fluff, here she is (without carby fitted):