A Klingon BOP combined with one of those Dr. Grordbort ray guns http://i248.photobucket.com/albums/gg178/judexavier/KlingonRaygunRocket0275p.jpg I know it's silly , and not finished...it would have more fins, coils, ribs and rivets. Actually, if you took a Bird of Prey and gave it a "MIG-15" look, that would be rather neat. (forgive my crappy attempt at "accurate" perspective drawing...I really need to practice my vanishing points-probably why I do so many of those side-views ) Anyway, That could work fine for the impulses, since they apparently don't have to be COG, perhaps the older models pumped out a lot of excess heat (or these needed a tune up). Yeah I need to get that shuttle figured out. The problem I'm having is that rhomboid? shape, it's very rounded and tapered, lots of compound curves blending into the nacelles, plus trying to figure out that "pilot window", that somebody could actually sit behind and see something useful out of. Perhaps it could be a sensor (SOP for when a window doesn't work).