383 440 swap. Same flywheel?

Well, it apears that I may have more than one problem.
The hole in my cast crank 440 appears to be a hair over 13/16 wide and around 1/2 deep. I stuck a piece of PVC pipe in it to measure the width.
Although the hole does taper inside it. So the width is not uniform for the entire depth of the hole.
The picture I took with the bolt is from the OUTER AREA just for reference. (Plus I didn't know what I was looking for.)
I say the hole is 1/2 deep from the ACTUAL top or edge of the hole further inside the end of the crank.
Hopefully this will tell us if I need to do anything for the manual trans imput shaft which is behind the current 1967 383. I've gotten some excellent information from this thread.
Including a phone call from someone very helpful in Canada.