1/4 mile times with a bb in a 72 duster

My dad ran high 12s low 13s with his Duster back in the day. Had a stock 440 with 284/484 purple shaft, 770 Holley, 906 heads(shaved .010), cast intake unsure which one, fender well headers, full exhaust, 4 speed, street tires(spinning), and 4.10 gears. He never did get to throw slicks on due to hurting his back and the car got sold. Good luck with your setup! I am in the process of piecing my 440 together for my 4 speed Demon.