Does any one know how to hook up two GT 40 fuel pumps in my car? I have a single GT 40 MOTOCRAFT part no PFB-8111 4G7Z-9A407-CA (255lph) fuel pump in the tank now & am having a fuel pressure loss @ the rails that happens once in a while in 3rd gear, 84 mph & I forgot what the RPMs where, 5000...