Don't think thats possable... though I heard of one that gives you the occational battleship that apears in the bar mission but battleships are easy. That might be a rumor though...

If I had a nickel for every time someone told me that my idea for melting down coins to make a giant robotic parrot was a bad idea, I would have one kicka$$ giant robotic parrot.

THat is no rumor. It is the flrebalance mod, though there might be more of them out there. And in that mod the battleships have been seriously beffed up