"The only 6 packs you could order were 69/70 B bodies."
You forgot 1971 and the E bodys.
The Six Pack provided an economic alternative to the notoriously fickle Hemi, at least in terms of as-delivered factory setup. Hemis often required extensive tuning to get the most out of them, but the Six Pack arrived ready to go.
Chrysler made just 3,384 A12s, all for 1969 and all with the lift-off black fiberglass hoods and plain, black wheels without so much as a dogdish hubcap. Perhaps the only adornments on the car for decoration were the chrome-plated lug nuts. When the 440 Six Pack became a stand-alone option for 1970, on models including the Charger, Challenger, Coronet, GTX and Barracuda, the specifications changed slightly, including the substitution of a Chrysler cast-iron manifold for the pricier aluminum Edelbrock unit. The option remained available through 1971.
