How to tell if 440 Chrankshaft is drilled for 4-Speed/Pilot Bushing??

That's what I did. I drilled mine out. I did go to the size that would accommodate the bushing, but used the Magnum pilot bushing.

It's on page 7 or so in here.......http://www.forbbodiesonly.com/moparforum/threads/69-road-runner-like-i-needed-another.107905/page-7