Wowzer, those are old. Good to hear they went to good use. I know this is probably not what you want to hear but I would need up front pay if I was going to work on anything at this point. If that works awesome, if not, then best of luck kicking it.
I'm starting the project back up again and I was wondering if you could lend your talents once more. I have made alot of progress in the time since you drew those, and I'm sure you will like what I've got to offer. So if you're interested let me know, your work was crucial in developing the first concepts for the game.