My best combo ever, was in my 73 DartSport.

400/451 low deck
11.2:1 compression flat tops
CNC ported Eddy heads
MP 590 purpleshaft cam
Streetable Isky 1005a springs
2" MadDog headers
M1 Tunnel ram
750 Quickfuel carbs

Ran high 9's at 3050#'s through an X-pipe exhaust system.