The difference is, however, the early flywheel will work with a 6 volt starter, which can be run with 12 volts, and the late flywheel is for a 12 volt starter.
Joe
"Truckin' Around .......... Since 1937!" My name is Joe and I am addicted to Classic Country Music. I just can't hep myself. Operators are standing by to take your calls! Now cruising in the Passing Lane