I think One Shot sign painters' lettering enamel 100-L Vermillion is a close match for the red. Their 199-L Lettering Black is a good match for the black.

They are available in quarter-pint cans at an auto paint store or on line through various sources. You can easily apply it with a small brush and it will flow to a smooth finish when dry.

Bob

1959 Chevy Apache Short Bed Step Side
1967 Cadillac DeVille Convertible
1967 Pontiac Firebird Convertible