383 builds for drag car
When I originally raced my 69 Charger, it had a 383 in it. Without ever pulling the short block, it went 13.0's at about 104 mph. 3200 stall, 4.10 gear, about 4400#'s at the starting line. Recipe was simple: about 9.0 CR, iron heads with minor bowl blending, DP4B intake, 750 vac Holley, and the 284/.484 purple cam.
Now configure that in your car. Probably 1 sec+ for dropping 1000#'s or more, another at least 0.5 sec for your heads, poke in a bigger SFT cam, and add some CR. I see you easily in the 10's.