Unless you’re pushing the power that requires it, or doing some sort of major fuel system upgrade(like a cell and surge tank in the trunk) better off leaving it alone. The fuel lines run inside the car, they come up through the floor under the rear seat and run along the drivers rocker before exiting through the firewall up under the dash.
I did this on my last WRX with the Eg33 when I made the fuel system and in the end I wish I had just bought new OEM lines to replace the rotted crap VS running the 6an braided shit.