My car is a 67 - I can't really do much with the K-frame side of things, which is why I'm hoping to find either a narrower bar with a similar arm length or some weird linkage change.

The K-frame has a couple of drain holes fore and aft of the big K openings, but even if those happen to sort of match the later cars' brackets, there aren't any flat parallel surfaces so they'd be out of alignment to the bar, not to mention I don't have any up/down clearance to pass the bar through the K-frame holes like the later cars do.

It's sooo close I'm hoping I can just come up with some goofy endlink setup. If I had a huge hydraulic brake I could just bend the bar ends to line it up.