7/16 x 19 tpi tap, and die

[the_asylum_wanderer]

As the title says I am in need of a 7/16 x 19 tpi tap and die. Would prefer the tap to be a plug tap but a 2nd will do.
7/16 x 19 was used on Austin 7 fuel systems , also know as " uns " thread or " gas " thread.
The tap is more urgent than the die at the moment .

Alternatively does anyone know where I can buy them, as I have scoured the internet with no joy as yet