I'm using one I got off a 69 300 on my 66 NYkr. Haven't got it on yet but it "looks" about the same, diameter wise as the 66 one so it should fit. Mine is a console shift so it really isn't as much of an issue (no shifter interference). 73 will interfere with the column shift linkage.
My local Carquest store said he could get the 69 style one and IIRC it was around $130-$150 plus about $30 for the core which I didn't have at the time.
