Here is what I have in my "files".
Mobilgas red 1960 code 70195 - may not be possible to mix with todays "ingredients".
RAL 3020... is what I have used - any brand could make it, looks good.
Someone here on Oldgas gave this recepie a couple of years ago in modern PPG, have not seen myself.
PPG DCC acrylic urethane
DMC900 27.8 27.8
DMC903 35.0 7.2
DMC917 155.9 120.9
DMC909 357.5 201.6
DMC907 1345.4 987.9
These old car colors are very close - I have used Rangoon red myself in a modern PPG mix.
1964 Ford Rangon Red
1962 Chevrolet Roman Red.
A quart will definately be enough (IMO)