My 71 Challenger has 11" manual drum brakes and it has the wrong master cylinder on it. It has the unequal reservoir type for a drum/disc setup. So I'm trying to find an OEM correct master cylinder to replace it. Line 5 of my broadcast sheet has "31" under the master cylinder box. What would the corresponding casting number be?
If I'm not mistaken, in 71 they want to the spring clip cover retainer setup over the screw down cover.
I checked my GG casting books and my ICCA book but could 't find it.
Thanks
Mark