Fuel system setup question.
I was hoping to get a little input on my setup to make sure I get it right the first time. I have a 72 chevelle, I have been doing a lot of work on it and getting it ready for this summer. I currently have a mild 468 in the car, but for next year I have a pump gas 540 for it. The car will stay pump gas, and will primarily be a street driven with trips to the track on some weekends. For the fuel setup I have a sumped tank, and am installing a Mallory 250 pump, thru a relay located in the trunk not far from the batt. I have an inline 40 micron filter before the pump, and another 40 micron filter up front going to the fuel log. I am running a bypass regulator to a HP950. I know this system is overkill for the 468, I tend to over do everything for the 468 I have, but am building it to handle the next engine going in the car. My question is what size fuel line should I run, I am thinking -8 supply and return from back to front would be sufficient, but want to be sure, I can also do -10 supply and return from the rear to the reg, and then branch down to -8 feeding the carbs, but not sure if that is too much? Not really sure if there is such a thing as too much to be honest, just wanting to get input on the setup, from more experienced guys. Thanks fellas