750 carb, definitely play with the accelerator pump shot (bigger shooter, I used #37) and the secondary spring if it's a vacuum secondary (go weaker, I used yellow), 3.91s, 2400 to 2600 stall minimum, install at least two degrees advanced (four deg. advanced also works very well), definitely recurve the distributor for a little more initial timing, 34 to 35 total timing.....and it'll rip.

I put together that exact combo for an acquaintance about 15 years ago for his '69 340 Dart and what a fun little car it was. His eyes were as big as saucers the first time he whacked the throttle.