Time has come to redo my fuel system. Doin a 255 pump, filter 30lb injectors but what does everyone do about the regulator? My stocker has 100k on it so i want to change it out. I want all new parts on my fuel system. How many people use aftermarket/adj. regulators vs. a new stocker?

And when it comes down to tuning, whats the difference between using the reg. to up the fuel pressure as opposed to doing it with a tune?