Though never saw it on screen the Drone ship was supposedly an adapted warbird. But what does the normal warbird look like?
First lets look at the Drone ship:
Let's logically assume the green fins, and holographic pins are the modifications that leaves the black shape below as the main body of the warbird. What do you think? i know the drone ship was a reuse of the Flea ship from Voyager but it's the only thing we have. their must have been at least a proto-warbird class in the 22nd century.