Fuel restriction w/ 6an line?

Just out of curiosity, why are you running -10 stuff? That's a pretty huge line at 9/16 inside diameter. (-6 is basically 3/8 inside diameter) In other words, its way more than necessary on a street car or even a fairly healthy race car.

All the lines were ran when I bought the car as a roller, previous owner had a sick setup. So when I got everything I needed together it came to finishing off the fuel delivery system. Yea it's overkill for my setup, but if I do decide to go big later. It's there lol so 6 an from the fpr will fine then?