Modeled after the assault gunboat from the classic pc game. At a 1/270 scale this is compatible to the miniatures game. The small hole in the bottom will make it fit on the fighter base. I believe you can find some ideas for the gunboat stats in the ffg and bgg forums.
I took some liberties in modeling the craft for better printing at small scale and better looks ;). I also omitted lots of detail to account for the small scale of the craft.
If you feel lucky, or have a better printer than me, use the assembled model. Otherwise print body and wings, attach the side wings at a 45° angle.