Dear Bob;

Don't mix things up.

If your using the 51 driveline use that bell housing, flywheel etc too.

If your going to the later type of (open) driveline use the 56 bell housing, flywheel.

Also; Be sure to use the 51 lock plates on the flywheel.

Good luck, John M.,, #3370..

PS: The 51 6V starter will work okay on 12. \:\)

John M., I.I. #3370

"There are no shortcuts to any place worth going". -Anon