67 Dart Speedometer

Does anyone out there happen to have a 67 Dart speedometer? I've been working on adapting a motor to drive a stock speedo for my transmission conversion and have something semi functional with the later model speedo, but got to thinking that the screw on style system the 67 used would probably work better for me to hold the motor in place. I could possibly trade a later clip-on style for one if someone was interested.