I was surfing ebay and I found a 1964 3200 V8 CS Coupe for sale. The link is set below. Notice how interesting the rear end picture is and how similar this design is to our cars. It seems as if the final design was in the works long before the actual car was developed as a specific project.
Enrique
http://cgi.ebay.com/ebaymotors/BMW-BMW-3200-CScoupe-Bertone-1964-BMW-3200-CS-Bertone-Rare-coupe_W0QQcmdZViewItemQQcategoryZ6056QQihZ010QQitemZ200012480402QQrdZ1QQsspagenameZWDVW[/img]
Enrique
http://cgi.ebay.com/ebaymotors/BMW-BMW-3200-CScoupe-Bertone-1964-BMW-3200-CS-Bertone-Rare-coupe_W0QQcmdZViewItemQQcategoryZ6056QQihZ010QQitemZ200012480402QQrdZ1QQsspagenameZWDVW[/img]