Removing bellhousing alignment dowells

Never tried with the engine in the car so I don't know about the clearance issues. I've found that the easiest way for me to remove the bellhousing alignment dowels is to drill the center of the dowel with a letter F drill and tap the stud with a 5/16 course tap. Screw a 5/16 bolt through the stud and push the dowel out. It works so easy that I now drill through the offset bellhousing dowels from the back (the part that pushes into the block), BEFORE I install them, so I can easily tap them while they are in the block and push them out if I have to change the dowel rotation.