I've acquired a '36-48 Olds 8 cyl. stick flywheel that I'm thinking about installing on the back of my '55 331 in order to couple it up to the old Ford tranny in my '40. Questions are what do I do with the pin on the back of the crank flange on the Cad? Are there any balance issues I need to be aware of? And I am aware of the tooth count issue on the ring gear/starter and have that handled. Thanks!