WA WTB or Locate AC Delco #18M1036

[samkost]

Thanks for the input guys.
I have inquired with White Post and may take this route for both the master and proportioning valve rebuilds. Pricey though.
I am patiently looking at other options and may replace my master with a Corvette/Camaro style disc/drum master cylinder with my new booster.
Fingers crossed, I’m also waiting for a local GM dealership to check GM warehouses for this OE replacement part.
My 1972 C10 is a 1/2 ton 350 V8 4BBL.
It also came with the SPID code J70 Hydro Brake Booster which I replaced and still have.
My original intention was to just replace the master cylinder with same type replacement under my hood.
It turns out, as we all know, restoring our trucks close to OE, it’s not always that easy.

https://67-72chevytrucks.com/vboard/...d.php?t=848267

Thanks