Yes, the 260/289 pre 1965 C4 might have the same one.
These had the 160 teeth flex-plates, and were the same as the US C4 used in the Australian Falcon, which is essentially a C8 casting dating back to the 1968 Australian 221 in line six Fairlane.
1964–1965 Select Shift, 24/24 spline, castings: C4, C5. 5 bolt bellhousing.