I see a lot if differences in master cylinder appearance on even so called high dollar restorations. Some appear bare metal with plated lid & others I see are all black like the booster. Are both considered correct?

You see a lot of different master cylinders and a lot of different appearances on restored AAR and TA master cylinders, but there is only one correct master cylinder and one correct appearance. It has a casting number 2229171 and the entire assembly is painted black including the cap and bale wire.

like this

#2

Thank you both for the help.

I see a so called untouched car on the Trans Am cuda site and the master cylinder is not black. Which is correct.I just cleaned mine, do i need to paint it now.
Thanks

The paint on the master cylinder especially did not wear well, even on low mile examples. Two photos of an original from a low mileage car;

Underside, same MC;

THANKS