Not sure if this info will help
I purchased hoses from classic parts a few years ago.
tag on hose 63-4497 C (I don't know if this is the part number)
...pic... ...pic... ...pic... ...pic... ...pic... One end male, other female with slot for the frame clip.
I bought these for a 50 not a 54. the brake line in the pic is the original off a 50.
