A12
As a side note..... The A12 package on a Road Runner was a "440 6-BBL" and on the Super Bee was a "Six Pack".
The option on a Road Runner cost an extra $462.80 and if the Torqueflight auto was desired it was and additional $39.30. Some say that if ordered on a Coupe the "Decor group", (which included deluxe vinyl trim, bright arm rest bases, deluxe steering wheel, B-pillar moldings and bright exhaust tips), was a mandatory option at $81.50.