On my street car I use a pump with a built in regulator mounted inside the gas tank. That way you don't need an external regulator or a return line. This is the way that most new cars are plumbed.
They are, but don't usually have rock solid pressure as rpm/fuel demand increases. Unless we are talking new new and the pump is pwm controlled and has a pressure sensor on the feed line.
Of course a few psi is no big deal if the injectors have overhead and it has a fuel pressure sensor/closed loop capabilities. (which most here would probably have)
