Question... Because I couldn't get the transmission out of park (no keys) I was not able to rotate the driveshaft. It made the top bolt on the front flex disc inaccessible. What we figured out to do was pull off anything preventing the drive shaft from coming down, drop the transmission down, and pull apart the driveshaft. Once it was in two pieces, the top of the flex disc was easy to access.

So my question is... What is the point of the giant nut on the center driveshaft? I thought it was to keep the two pieces from coming apart?