Yes I figured that. I will use a used one as long as it fits. I am helping a friend try to locate one as there is not one on the engine now so we have nothing to compare it to. I know the p/n changed from 63-67 to a different p/n 68- 70 but the book he has does not go beyond 70 so I really don't know the p/n for the 74. I thank you for the response.