fuel regulator location

ok, i have a dumb question. where do you guys mount your fuel pressure regulators? is there a place you cant mount it to pass tech. this is my first time running an electric fuel pump, so this is all new to me. i have seen the brackets that hold it right next to the carb. is there and benefit to certain mounting locations? is it better to have it as close to the carb as possible? thanks for any pics and tips.