How rare are FJ6 Demon 340's?

Thanks for the info! I am going to say it was a pretty rare color when new and it probably did not have a good survival rate. I mean if you were a kid in the late 70's and there were 2 or 3 Demon 340's on a used car lot and there was a GreenGo FJ6 car, I am guessing most would chose that car to modify and eventually destroy.