NOTE: The casting number on this case sometimes appears on the bottom of the bell, and at other times is not located on the bell nor on the case proper. If it is NOT located on the bottom of the bell, do NOT rely on it, as this number in other locations is NOT reliable. NOTE: See note at reference #91-P106.
NOTE: This case may actually be a 577 casting. This number is found in various forms, sometimes looking like 57Z, sometimes like a changed 572 using a welder, and sometimes looking like 577 changed back to 572. It also NORMALLY does NOT appear on the bell nor on the case proper like other castings. So far found only in its various forms on either side of the support rib between bell and differential and on back of case below transfer gear cover.