My dads 75 Pinto had a fully built 2.3L with 500cfm carb, solid lifter cam, and long tube header with 42" long glasspack muffler.
IIRC he had Racer Walsh forged 10.5:1CR pistons, HD rod and main bolts, his own ported and polished heads, big valves which he hand polished, Racer Walsh stage 3 solid lifter cam, springs, retainers, keepers, etc. the head was also milled quite a bit. I dont remember how much it was milled but he calculated it was running 11.6:1 CR. He also ran his own homemade octane booster. He also had worked on the intake and was running I think a 1" carb spacer.
He also had a MSD ignition module.
When leaving the light it either wanted to stall or burn the tires off and would pull the fronnt wheels going 1st-2nd if he stayed in it.
Going down the street everyone started looking for the Lotus. It didnt sound ricy, it had that burbling lopey idle that sounded like a highly tuned 4 cylinder like a Lotus Esprit or Fiat Abarth or Lancia Stratos. It was considered one of the fastest cars at the Ford plant where my dad worked.
Sorry, but if I was wanting to build a hipo EFI N/A I would use a aftermarket standalone Fuel injection computer such as a Megasquirt or SDS (Megasquirt is a kit for $109, SDS is IIRC about $500).
With a EFI and a Megasquirt you can keep the driveability of EFI and yet still make max HP.
If I had the money I have often wanted to build a N/A hipo 2.3L just to show you young whippersnappers how its supposed to be done.