I found those rules a couple of months ago, loved them. Make sure you check out the "The Lexicon" as well! Glad you liked it. I know very little about bikes but based on those graphics I'm guessing late 80's early 90's. Can you post a top down look at the graphics please?

I've got a "sister" bike, a Miyata 912 and it is amazing. Seems like I've read there is some sort of connection between the two.