Yes it was, Karl!! And to Joe, I have a 66 Valiant Signet convertible that cam factory with an 8 3/4"! In 65/66, the 7 1/4" was the only standard rear available, although there was a Suregrip option for the 7 1/4", and more often than not the 4 speed cars got a SG, although still not standard!! A body Danas did not come in A bodies until 68, and only in 4 speed Hemi Darts and Barracudas! It was not offered in any other car with any other motor as far as I'm aware of!