What style fuel line is best?

I really like the Earls Ultra Pro hose and fittings. Very flexible, easy to assemble, available from summit the next day. Here's how I plumbed my '70 Dart. I have an Aeromotive Stealth 340 fuel cell, with the pump inside. I'm sure I've made plenty of mistakes, and it might be wrong, but this was my first time, and it works. I will change what needs to be changed if I have to though. Feed and return are 1/2", I probably should have gone a size bigger for the return.

I have since switched the hard lines from the fuel cell in the trunk to the soft braided lines, I was just experimenting with the hardline.

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nice ! You built a nice fuel system, fuel starvation will not be an issue.
I used 1/2" in my system, took the advice from an old timer. He said spends your money once and build it right.
You need 1/2 to feed over 600 hp in the 1/4.