Fuel Pump Size - Any Effect on Engine/Mileage

of course, it will be fine. maybe even better. the stock pump is 88 lph until 1989, then from 90-93 it is 95 lph, and they are both not even enough for the stock system, so any upgrade in fuel system to a stock motor will help. maybe not noticable in the SOPF, but gas mileage may increase, who knows. Also, u might want to look into the ford motorsport 190 lph pump, it is less than the 255, but as long as u dont go insane with the motor it will do just as good, AND the 190 kit comes with new everything, not just the pump itself which u would have to switch out and move everything over if u got the 255 lph.

I love your avatar funanin