Finally got my SemiSuperSargo, got an idea of why there never was a modding guide - files that affect these things are scattered all over creation, if I want 40mm Bofors on a Sargo in 1941 there are half a dozen files in different folders that need to all be in synch for that to happen.
And there she is, December 1941 with the late war conning tower and fore & aft Bofors, but now that I did it I'd be hard pressed to explain it to another newby.
Anyone ever notice, when you start a career with an after deck gun you're stuck with an after deck gun? Try to change an after deck gun to a forward one midway thru a career and there's no crew slot for ANY deck gun after that, if you want a forward deck gun you have to start the career with a forward deck gun.