Manual to auto swap

OK so I'm doin an engine swap in my early A, going from slant 6 to 360. Well the 360 is out of a truck that had a factory manual behind it and I'm putting a 727 on it instead. Sounds ok right? Well, I ran across a section on crankshafts in "how to hotrod small block mopars" I believe and it made a mention of an incompatibility issue, specifically that a manual crank is different than an auto crank in that the pilot bushing is 1/16th of an inch larger on a manual crank. I have done some research on the issue and it appears that the torque converter needs to have a hole in the back of the crank for it to ride in so it keeps it centered and level. This is a entirely new issue ive never heard of so I'm hoping someone can enlighten me. I want to order my stall converter but am holding off until I get this issue resolved. Ive read on other forums to just pull the bushing out and it will work or to hammer it further into the crank, or that it wont make a difference at all and don't worry about it. So whats the answer? Thanks for the help