i have purchased a used Mercruiser MPFI intake for my 383 Vortec and am wondering which injectors i should use with it. I plan on 500 horsepower and according to the injector calculator: Brake Specific Fuel Consumption is roughly 0.50

So 0.50 x 500hp= 250 lb/hr of fuel used
8 cylinders 250/8=31.25lb/hr

Duty cycle should be at the highest of 0.8 so 250/.8=39lbs/hr injecotrs

Does 39 lbs/hr injectors seem applicable for this engine? its not like i'm going to be running at WOT all the time so i think i would be ok with the factory Mercruiser injectors of 29lb/hr. What do you guys think?