Hello 71TexasBoss,
To my knowledge, no one is reproducing the OE black plastic park brake release handle. The billet version seems to be the go-to choice of repo people instead of the black plastic version. Ford did offer a service part handle (D1ZZ-2760-A), but it was discontinued in 1980.
Dynacorn manufactures a repo park brake control, but many sites show out of stock. (I guess it’s that pesky “Supply Chain Issue” we keep hearing about.)
There is a NOS park brake control (D1ZZ-2780-A) which includes the release handle on E -Bay. But @ 129.99 + 14.95 shipping, that is probably more than you want to spend just to get a handle.
Someone on the forum may have a used park brake control with a good handle. If not, I would check with Don @ Ohio Mustang Supply (OMS) or Mike @ Motor City Mustang. Both are members/vendors here and have parts cars.
I would PM Don on the forum or call him @ 440-949-2556 M-F 9-5 since this would be an inquiry on a used part.
Mike can be reached via a PM here on the forum or his E- Bay store @ motorcity_mustang.
Good luck with your search.