With the Motown V8 415ci Small Block running close to 950HP on the dyno fuel delivery was very critical, if the system goes lean at boost it will be scrap iron.

The fuel delivery system consists of :

Aeromotive A1000 Pump For carbureted engines:
up to 1300 HP - naturally aspirated
up to 1100 HP - forced air induction
Flows 600 lbs. per hour @ 13.5 Volts and 45 PSI.
-10 AN Inlet and outlet ports.

And

A1000 Carbureted Bypass Regulator
Base Fuel pressure (with vacuum/boost disconnected) adjustable from 3-15 PSI.
One -10 AN inlet and one -8 AN return port with two -6 AN outlet ports and 1/8" NPT gauge port.
Stainless steel vacuum boost port - ideal for turbo-charged or supercharged engines.
Fuel pressure rises on a 1:1 ratio with boost.

http://www.aeromotiveinc.com/