Back when I used to own Unlimited Racing in Detroit eons ago, we always had to discuss how one change always required other changes. Just installing a set of headers seemed simple to a customer, but always required further re-engineering to make it actually happen of everything around the headers. Sometimes a mini starter had to be installed, sometimes a double hump cross member, shorter spark plugs with different boot angles... Same with "just" installing a classic Holley carb - different fuel lines, different linkages, different air cleaner, jetting the carb, moving things around to accommodate the fuel bowls, and on and on and on...
Here is an image of a C2 Vette with an LS7 installed by
https://www.streetshopinc.com/, showing how they chose to move the fuel line around the front of the hydraulic brake assist unit and master cylinder:
Hopefully you won't have to get too involved in re-engineering your fuel line!