I have 42lbs injectore and welbro 340.running 15lbs of boost
good heads ported (easier would be aluminums ) ,better head gaskets than stock (cometic or rjc) , good arp head fasteners, better cam (consider going roller) , suspension (springs, control arms , swaybar ,shocks, brakes), sticky tires ( mt radials), stout transmission (from a good builder or go th400) , converter that will hold up to over 600hp (Dusty's ptc 9.5 is the shiznit), upgraded rear axles (moser /strange), race gas or alky , good working ignition (consider he TR6 from bailey) ,
plan on upgrading the rotating assembly with forged parts minimum pistons and center mains , lots of tuning and logging...
and double of what you listed as your current parts
83 injectors (or 80s) , twin 340 pumps and with the 66 you be near 30psi on the boost