I used dual walled steel brake line and compression fitting for my fuel lines. Works great! The fuel log you can find lots of places: jegs, speedway, ebay...

One thing you might consider is a fuel pressure regulator- Check the specs on your carbs and set the regulator to that. Under normal conditions you won't have problems without it but at high rpms the mechanical fuel pumps increase production, so to speak, and can flood your carbs.

'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi