Well I have the Holley kit with the new heads 2.02's and run 24# injectors and still run a tad rich with 42psi, the cam plays havok on the A/F ratio at idle and WOT, if I don't run the 42psi it gets ugly at low RPMS. Some people with the Holley kit have had problems with 30# being to big and they can't run them at enough pressure to get a good spray pattern. Remeber the injectors are supposed to run at 80% duty cycle. I also plan on going to a blower in the future, but I will go to 36 or 42#ers and get rid of the FMU.
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My Ride Check Out My Site 91GT, Holley SysteMAX II Kit-Heads 2.02" x 1.60",Full MAC exhaust 1-5/8" Long tubes, 2-1/2" O.R H-Pipe, 2 1/2" cat back, 12" K&N Filter, RNH PERFORMANCE Ram Air, Ron Davis Radiator, Full Suspension,3:73's, Welds, Best on new motor-12.60 @ 108, no traction 1.98