Hello, hoping to get some guidance or advise on installing new fuel line. I have a 1965 Pontiac GTO with 5/16" fuel line. Car was previously restored, but they replaced the original 5/16" fuel line with the same size. It has a 1971 built Pontiac 455 and I want to upgrade to 3/8" fuel line and add a Holley mechanical fuel pump. My question is, how hard is it to replace the fuel line with the body on the car? When I ordered the fuel line, I was told I'd have to loosen the left rear bolt (that attaches the body to the frame) to get the fuel line over the frame. I was wondering if I get 4 jack stands that extend up to about 2 feet, would that work for installing the fuel line? I'm hoping to learn how to install the 3/8" fuel line by removing the 5/16" fuel line. I'd appreciate any guidance or advise before I try to tackle this task. Thanks.