Steve, I think that car is so famous that it belongs in a museum.
I suggest you contact the owners of museums, and collectors of
historic famous cars. One way to learn where these museums may
be is to research other historic famous land speed cars, and see
where THEY are -- i.e., Spirit(s) of America, Thrust(s), Railton, etc.
By the way, did the Green Monster ever actually go 650 mph (officially or otherwise)?