Well I am making 331 RWHP with my setup and with no power adders.
Here is my setup:
306
GT40P Heads Ported and Polished with 1.90 x 1.60 Valves
Crane .550 lift Spring Kit
1.7 Roller Rockers
Professional Products Typhoon Intake Manifold Ported and Polished
Mac Cold Air Induction
Anderson Ford Motor Sports N-41 Custom Camshaft
70mm TB
80mm MAS
30lb Injectors
Mac Shorty Headers, Mac Prochamber and Mac Cat back Exhaust
MSD 6AL Ignition with MSD Billet Distributer
MSD 9mm Racing Spark Plug Wires
Iridium Plugs
Mac Underdrive Pullies
Art Carr Street Terminator Transmission with a 3000 Stall converter
FRPP 3:73 rear gears with 31 spline axles, an Eaton 8.8 Differential
Custom Burned Superchips computer chip
255LPH Fuel Pump
Adj. Fuel regulator
Set the timing to 16 degrees advance and the fuel to 37 PSI
Eibach Drag 90/10 shocks, FRPP Progressive rate springs
Eibach upper and
lower control arms
Sub Frame connectors
QA1 Tubular K Member
Fiberglass hood with 1.5in cowl
Race Weight with driver is 3120
Price to build about 10K
I average about 30 miles a day driving, I also get 18-20 MPG on the highway and 12-15 MPG in the city. I also have run a best 12.086 @ 113.21 MPH with this setup and I still have power everything including A/C.