IIRC, In the later part of the 65 model year they became standard on early A's IF equipped with the 273/235 engine AND a 4 speed. Reason was too much warranty work on the 7.25's when coupled with the higher HP motor and a 4 speed. The 273 2 barrel still got the 7.25. I parted out a 65 GT with a build date of 7/23 that was originally a 273/235 with a 4 speed. The 8.75 in it had a date code of something like 7/1 or so. Still have the housing which is going in my 65 Barracuda.
