Swap manual /6 with auto /6 - what do I need to do?

So I pulled out an unknown /6 in my '65 and put in a '72 Demon /6. The end of the crankshaft was larger. I had to have the hole in my flywheel machined larger to fit the new crank diameter. I took the flex plate or whatever you call it with me to the machine shop and he used that as a guide.

The other issue was the pilot bushing. The new motor was from an auto and although it had a hole in the end of the crank, there was no bushing. We had to remove the bushing from the old motor...not an easy task! My buddy used a small puller he has. In the end it worked out. Thanks for the tips!