Hi, Mark, I have the Smithsonian book on "Stropp" which I believe has some drawings and a good photo of the topside. I may have some info in an issue of WWI Aero as well, I know there was an article with period drawings of various radiators, but I'm not sure whether the D.Va was included or not. I'll check.
Send me a PM with your email, don't want to share potentially copyrighted material on the forum (even though it is for research purposes only, which as far as I know is permissible).
Dave V.