All the disc/drum MC caps were the same. The drum brake caps were different but the same style for them for all models equipped with 4 wheel drum brakes 71 through 74.
I find it interesting that Mopar had so much variation in disc drum master cylinders from ‘67-‘70 depending on year and body platform, yet an almost universal 4 wheel drum brake MC during those years.
Starting in 71 through 74 they used a standard disc brake MC across all platforms and a standard drum brake MC across all platforms with only a few exceptions (71 hemi disc, e body manual disc being a few of the exceptions).