Seconding the request for 1/48, although I can see how the wings and fuselage might be tricky in a smaller scale. Again, I'd be happy with just the cowlings sprue to use to convert the Gavia/Special Hobby D.II. I wouldn't need you to try to match the 1/48 kit; I'd be happy to make whatever corrections are necessary to fit your parts. As it is, your instruction manual is already an invaluable asset so thank you, Bo!
Drew