what proof do we have that 1969 383s came with chrome Valve covers?

So has anyone ever figured out how many 69 fastback 383 4spds ? I would like to know how many when it comes to colors, options ect. That would probably be imposable. I know the formula S 383s had different suspension, wheel size & other things.


461 4/speed 'Cuda and "S" Fastbacks 383 +/- 10.