Is my crank drilled for a 4 speed?

It’s got a bushing and the od measures (roughly) .965” I’ll definitely do some more measuring when I get more into the swap. Thank you.
That's why I wanted to be sure of the depth. From the picture, it's deceiving and does not look that deep. Remember, some folks make manual transmission cranks out of auto cranks by installing a bushing and cutting some of the input shaft off. With your measured depth of over 2", I do not believe that is the case. I think you are good to go.