There were 231 full size Fords built with the 427 in 1966

The records did exist, at least when Doug Siperly wrote to Ford exec S Rosenfeld. Mr Rosenfeld wrote the figures on the bottom of the letter shown here:





1912 Model T Ford touring Salmon (ugh!)
1913 Model T Ford Touring original Black paint
1915 Model T Ford Roadster Black
1915 Model T Ford touring Black of course!
1967 Cougar GT 390 Cardinal Red / Black
1968 Cougar GTE 427 Augusta Green / Saddle
http://www.supermotors.net/vehicles/registry/15029/50071-2