Electric fuel pump question

You'll want your return line as big as your feed line if you run a bypass setup. I also use an inertia switch to kill the fuel pump as others have mentioned. Got one for a '98 Ford Ranger. You can pick one up at the junkyard for next to nothing. I also use it as a hidden kill switch so it's not going to be as easy for someone to drive off with it. For quiet pumps, I've been hearing a lot of good stuff about Walbro pumps and they're not that expensive. Even though I run one, stay away from Aeromotive pumps. You aren't going to like the noise.