Prior to me installing this new 235 motor I always ran 216 motors. Last motor I ran was a 39 that ran like a watch. I have always ran the push button starter. I will have to check the spacing on the flywheels. If I understand correctly it would be better to run the 10 3/4" clutch and some 216 motors also had 10 3/4" clutches. I should also mention that I would prefer to use the push button starter so that may limit me to the what I have in fly wheels.