will 67' K member fit in a 66 dart?

It's a gorgeous convertible, so I'm sticking with the 225. Not that I don't like to step on it, that's what I have my wife for! she knows only two speeds, stop and go! LoL

Another question, if the upper a frame fits, do the lowers. I want to replace the 9" brakes and lower A frame with the 67 Lower, backing plates and 10" brakes.:sign3: