How many "H" code 71 or 72 Demon 340's remain?

I sold a '71 Demon 340 about 15 years back to a friend of mine. It is now restored and looks good. It's a plum crazy console auto car with a lot of options.
I had a '72 Demon 340 that i sold a couple of years after that one, same basic car as the purple one, except it was dark green. I heard it's now restored too. Both cars are in south east B.C.
A friend of mine had a '72 Demon 340 4 speed project car he sold a couple of years back, it was red and pretty rough. It's now being restored.
The same friend has a '71 Demon plum crazy 340 3 speed standard on the floor car he is restoring.
They are around if you look hard enough.
I would guess 15% to 25% actually still exist today.
Maybe 5% are on the road still.
Just my 2 cents.
Tom.