This is a picture of the fuel lines firewall forward.
The fuel goes through the firewall at a bulk head tee, and is then diverted to the mechanical pump on one side and the electric auxiliary pump on the other side.
The fuel line going to the mechanical pump goes up to the firewall cross brace and is attached to a bulk head 45 degree elbo.
The fuel returns from the pump at the bulk head elbo next to the first one.
The other lines goes to a Facet Electric pump.
After the pumps there are check valves so that fuel is not pumped back through the fuel pumps.
The fuel then goes through an in line filter.
After the filter there is a presure sensor, then the line goes down to another bracket holding the bulk head elbo that will send the fuel to the carburator.
There will be stainless braided lines connecting the fuel system on the firewall to the pumps and carburetor.