You're correct, you have a 2bbl bellcrank/head bracket.....as does every other photo I see in this thread! There are at least 3 different ones. The 2bbl bracket has a straight arm for the carb link that offsets inboard. The '65 4bbl. has a curve arm, and the '66 4bbl offsets outboard and has a curved arm. The transmission arm is also a different length.