1972 Suburban 4x4 3/4 ton K20 rear parking brake

Hi,

I was wondering if anyone knows where I might source a new rear parking / e-brake for a 1972 Suburban 4x4 3/4 ton K20.

I have searched everywhere and can't find one. I called Inline Tube and they don't produce one. However, they did tell me that if I send them a sample that they could reproduce it. Unfortunately, both of my rear ones are missing.

Any help/suggestions would be appreciated.

Regards,
Nick