This is a modified version of Pyro-GX designed by Eagle. It was modified to create a solid ship and a few tweaks to make it better to be able to print. Just scale it up to the size you want it and print with supports.

Ive included the sketchup file also for anyone who wants it.

Modified version of the ship from here, but grabbed using archive.org:
http://www.descent2.com/goodies/3dmodels/