John, your 255lph should be fine, most inline pumps actually slow the feed down with a big intank pump like you have.
Save your money till you put the fuel system on the car, Aeromotive 1000 pump and filters or Magnafuel, -8 feed, -6 return...1000hp+ with no issues. Weve been 600HP on stock rails but I prefer to use aftermarket rails around the 500hp mark to me safe, especially with a large injector.
If you need help setting anything up let me know, I build my own fuel systems all the time
Save your money till you put the fuel system on the car, Aeromotive 1000 pump and filters or Magnafuel, -8 feed, -6 return...1000hp+ with no issues. Weve been 600HP on stock rails but I prefer to use aftermarket rails around the 500hp mark to me safe, especially with a large injector.
If you need help setting anything up let me know, I build my own fuel systems all the time