Nice-looking car, great stance. Interesting, having a Cheetah shifter in it.
I would think that unless someone rolled it up into a ball, it's somewhere running or sitting. It could be anywhere in the US or Canada, or even across an ocean by now.
Try running ads on racingjunk.com & the other racecar sites, National Dragster, even eBay if there's a way to auction a reward. Reed Koeppe might be able to help.