This has a chance of having the 3.09/1.92/1.40/1 gearset since it could have been for an early '74 model year car based on the date and would also have the 904 26 spline output.
Every late 74, early 75 A body trans I have had with the 3.09 1:1 gearset, used the 5.125" retainer and the "overdrive" bellhousing. This one has the 796/4.354" retainer.
