my opinion,,,i would never rely on an electric pump that is not in the tank,,they over heat and quit PERIOD,, (and i have a elec carter on my early hemi,not my doing cant be reversed) i would go with a carter mechanical pump, since you have a stock motor a stock carter replacement is still better then any auto parts store pump,,,i ran a carter 120 gph 7 psi mechanical pump for 12 years on the street on a blown 340 dual quad motor,,only reason i changed it was i freshened up a few things and did some cleaning,,,,just my 2 cents,,,probably worth 1/2 cent these days,,,lol