just digging this thread up, I also found a denso universal 1020 also fit 300lph, Fuel Pump Part#: 195130-1020. They are Denso fuel pumps modified by Kyosan in Japan

Flow Rates:

510 LPH @ 10 PSI @ 14 Volts 7.7 Amps

470 LPH @ 20 PSI @ 14 Volts 8.3 Amps

430 LPH @ 30 PSI @ 14 Volts 8.9 Amps

390 LPH @ 40 PSI @ 14 Volts 9.5 Amps

350 LPH @ 50 PSI @ 14 Volts 10.5 Amps

305 LPH @ 60 PSI @ 14 Volts 11.5 Amps

258 LPH @ 70 PSI @ 14 Volts 12.5 Amps

200 LPH @ 80 PSI @ 14 Volts 13.5 Amps

140 LPH @ 90 PSI @ 14 Volts 14.2 Amps

320 LPH @ 30 PSI @ 12 Volts 7.3 Amps

273 LPH @ 40 PSI @ 12 Volts 8.3 Amps

225 LPH @ 50 PSI @ 12 Volts 9.3 Amps

180 LPH @ 60 PSI @ 12 Volts 10.4 Amps

120 LPH @ 40 PSI @ 9 Volts 7.1 Amps