Cable should be the same. I have a 76 GL hub that my 78 K cable fits perfectly. It doesn't matter what side the drive is on, as long as the little tang in the middle of the drive rotates right when the hub is spun. It's not good manufacturing sense to have some speedos driven by clockwise motion, and some by counter clockwise motion. F's have the drive on the opposite side, but they still spin to the right, for example.