By last count there are around 8 in the US, and 1 in Canada.
The first was imported by the Baker Boys from Georgia, an R/T clone -
A guy on Moparts who I know pretty well (OzHemi) is a car importer and he has one (another R/T clone) , and has brought over four others for other customers.
(He also brought over OneBadSuperBIrds right steer Daytona....a car that was in Oz since 1972 and had to be converted to be licenced.)
Another guy named Ron down south somewhere has two Aussie Chargers - and theres another guy in SoCal that has another one.
SO we have-
Baker Boys car - Vit C
OzHemi - Vit C
Unknown - Bondi Beach White
Unknown (SoCal) - Mercury Silver
Ron - Penta Magenta (bit like Panther Pink) and Vit C
Sandy in Canada - Dont know the colour
I believe all are Hemi 6 cars.