Looking for some parts for a master cylinder for a 1956 Buick Century and I can't find them. I need the piston and guide retaining ring as that just rusted into powder, as well as a push rod grummet as that was brittle and also crumbled in my hands. I probably need the retainer for the push rod as that wasn't there when I took it apart. I can find kits that have like 5 parts, but I need more than that. Found an old post from a long time ago here and the poster mentioned a GM repair kit # 5455765. A quick Google search finds me nothing.
I'd be up for a replacement master cylinder that actually works, but I can't find one of those either.