question about spark plugs and fuel pump.( upgrades)

In my opinion, if you're road racing, or otherwise running for extended period at or near full throttle, and want a safety factor, or running at elevated fuel pressures (above 39 psi) you should have a bigger fuel pump. If you only run occasional full throttle blasts, e.g. down the 1/4 mile track, where a safety factor isn't as important, and running factory fuel pressure, you're alright as is. I don't road race, don't have a turbo/super charger, occasionally visit the 1/4 track, and personally have always run without the safety factor. Your choice....