There is only one Ferrari 166 bodied by Bertone. This car (#057S) was the 1951 Turin Auto Show car and was also used as the safety car at the GP Vetturette, Monza. Engine 0210EL was at one time installed; the original engine is also still with the car. It seems the car still exists, be it in dismantled condition. After the owner's (Gaensdorfer) death a massive law suit about the ownership began.
Enzo's Legacy is an interactive timeline of all Ferrari models ever made.