I loved the 60s style and the cool action scenes, sexy ladies and a lead that looks like a chipmunk. I have seen a few other films by Suzuki and none have been Close to being as good as Branded to Kill.

Hmm...very difficult request, not many watch old style movies, I'm going to list some gangland movies/series that could potentially fit, maybe  you find something:

New World, almost no ladies, but fits the cool criteria i think
For the Emperor, it's a noir, so sexy lady check, action also check, not sure about chipmunks
Last, a broker on the run hides between homeless folks who operate like gang, lots of action,  chipmunks and maybe sexy ladies

Now into hardboiled melodrama category:
Giant
Sandglass

To a lesser degree perhaps:
Swallow the Sun
Friend, Our Legend
Cruel City