No power drum brakes???
that is indeed the "early" booster. the later one is flatter (narrower?) and a little larger diameter.
the bracket is very similar, but i think there is a subtle difference in distance/angle from the lower pivot to the face. i'm not 100% on that, it could just be the angle/lighting-- i'm basing it off the later set up that i have sitting here on the bench.
for all intents and purposes, they'll bolt up and work the same from 67 and up.
