Bellhousing Compatability

Look's like A/F body aluminum case trans, the 4 numbers after the pp833 is your build date , it's based on a 10,000 day calender. The number 5193, Im guessing your trans was built around Oct, 1975. What is the part # on the bearing retainer , on the input shaft? Should be 2960122, or 3878596, that's what will determine your bellhousing. Nice looking trans by the way.