What style fuel line is best?

Thank you. The fuel system works pretty good as far as I can tell. Having this 1" thick wood spacer REALLY keeps the carb cool to the touch. I'm a believer.

AED Birchwood Carburetor Spacers 6170



At first that's what I thought. But it works and I don't know how. lol. Someone on here explained it to me, I'll search for the thread and get an answer. I have a gauge mounted on the fuel log, its not in those pictures. The way I have it, it works when I adjust the regulator for any given pressure. :)
Your making me feel like Joe dirts dad "how does the positrack rear end in a Plymouth work? It just does"

Guess this is one of those things I just cant understand, but I'm excited to hear it works