Drdave recently contacted me about the sounds and bonus countdown on the Cheetah in the video I posted many years ago here:
His sounds like this:
My Cheetah is a bit different from most of the others I've seen over the years; it has the blue cabinet (as opposed to the far more common black), purple and blue bonus inserts, and different (aka way better!) sound.
Anyway, Dave convinced me to dump the roms and send him the files, which I've now done. We're calling these "proto" roms, although I'm sure that's a misnomer. Scott C. looked at them and he says they're quite a bit different from "production" roms, although I can't comment on specific differences other than the sound and bonus countdown.
Anyway, I'm going to send these to the IPDB to have them posted, but in the meantime if anyone wants the files, shoot me a line and I'll email them. Steph at Hobbyroms.com also has them, if you want to order them on 2732's or whatever.