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The Airtex E8312 is a common aftermarket pump for the stock EFI system. It will put out 90 psi (unnecessary, too much) and about 30 gph (also more than needed). Don't get carried away on a bigger popular pump like the Walbro 255. 255 lph is 67 gph. Way too much flow and the pump will make a lot of noise trying to push through the small L28 fuel lines. There are several online calculators out there. https://www.google.com/search?q=horepower+fuel+pump+calculator You haven't described what you plan to do with the car. The race guys often use a swirl pot or surge tank.