how big is a stock fox fuel pump? im thinking of upgrading to a bbk 190 or a 255....i have a 89 vert w/ a bbk 70mmtb, polished cobra intake, bbk cold air, ford ud pullies, a/c and egr delete, msd cap and rotor, frpp 9mm wires, and full exhaust. I only have 19lb injectors and stock maf but soon...