I had a silver on red '79 T/A with orange graphics. Equiped with a 301 and an auto, it was slow beyond belief.
Yet it's still one of my favorite cars. It rode very well, and it looked stunning.
As I recall, you couldn't get a manual trans with AC. Manual cars used left over poncho 400s from 78. Everything else used the Olds 403 or god awful 301.