I've been trying to do that for a looong time ! you did it !
I'd really like to get your know how for the Sen Toku, as you know I was modding it out of a typ XVIII so that it would be german from the start (Heard somplace that it didn't work if you just changed the nationality to japanese). So with your help maybe we can get one working on the Axis side too.
I separated the tower from the sub, but everytime I import the 3d model of the tower there are bits missing, stil have to figure out why though.
@kiwi2005 : nice picts you sent ! I guess there are more classes moddable in the future then !