Very great work. I did make another version of the Danube class earlier this year (or maybe last year) that included the modules as well. I never uploaded it, but if you want a copy in case it might help, let me know. It involved some more accurate panel lines, a redesign of the cockpit module and wings for better shape, and also includes the rollbar. It's in a smaller scale, but I bet you can still get something helpful from it.
Another Revamp
Sorry I haven't released it yet, it might have satisfied you, but at least the rest of us get a super-detailed giant scale runabout now. :P