69 Cudas with a 383 or 340 could be ordered with a four speed, 23 spline. Although mine was Formula S not a Cuda, still the Cuda option could be ordered with a four speed.
That’s cool ! Did you buy that new ? Lived in Pocetello ?
One of my best friends family owned hill brothers Motors in Pocatello at that time. He told me they once took a GSX off the delivery truck and took it to the drag strip, then took it back to the lot.