The FH67 Thunderhead is the craft of not-yet-notorious smuggler Gex'e Sirrl. The craft is named not for its combat prowess, but for the ridiculous noise it generally makes as it touches down on a planet or space station. Sirrl's craft has been modified to hold extra cargo, and has also been outfitted with a hyperdrive engine (hanging from the bottom of the fuselage).
(Created for the Smuggler's Life space pirate contest over on flickr.)
For more: http://www.flickr.com/photos/52288516@N03/sets/72157624640918198/