Again! Why do I do this? I feel compelled to make the game look better knowing that my time would be better spent on programming.
Anyway I found a neat source of blender models, this particular download (from http://www.blendswap.com) lets me assemble ships from parts, meaning that I can alter them and customize them to my linking, basically selecting how many polys the final result will have.
Here are some images:
Also pictured is the “editor” which is fairly basic now, but will become a well a very useful modding tool.