If you want easy, Russel makes a very nice nylon braided line that is simple to work with, and safe for all fuels (supposed to be safe with Ethanol blends which is important nowadays) and rated as high as 300 psi or more.
But at $25 per foot it's not exactly cheap. Then all the AN fittings needed will add another $150 to the bill to do the whole car
I plumbed my blazer with this when I did the 6.0 swap, and a mix of steel line here and there.