Low/Midrange torque=port velocity. Stealth or Eddy Performer aluminum, or a set of 451's sent to Hughes for big valves ($800)
I'd use a CH4B manifold you'll have to find used; I could mash my 440/.509/850DP to the floor from idle and it took it without hesitation. Consider an aluminum flywheel-you'll lose some drivability in traffic but the difference in acceleration is stunning. With the 5-speed you won't much worry about it after you're moving and it will help with the slow shift of modern transmissions.