fuel line size

[mebe007]

ok so im getting ready to order stuff to plumb my fuel system. mechanical pump and edelbrock carb with a holley fuel pressure reg. im looking at doing new lines from pump to reg to carb. no more than 500hp. so should i go with a -6an or -8an system?

 

[SSedan64]

I'd go with -8 for a single line Carb.