Fuel system required an in-tank fuel pump. It is very important to have an in-tank pump. It lasts longer and remains submerged in fuel if mounted in a very well baffled fuel tank.
On a fuel injected motor where fuel needs to be constantly available, it is very important the fuel pump does not go “dry” on hard turns, acceleration or braking. The engine will immediately respond to any change in fuel volume by surging, stumbling or stalling.

Several different approaches.
Worst way: Install an external fuel pump on the frame rail. This means never letting the tank go below ½ tank and replacing the fuel pump every so often.
Budget: Purchase a Rock Valley in-tank pump kit and modify your existing fuel tank.
Expensive/Best: Purchase a fuel tank from either Rock Valley or Rick’s Rod Shop.

I purchased a complete custom stainless fuel tank from Rock Valley.
There were good and bad points from this purchase.
Good points: Delivered within schedule (5 weeks) of order.
They use Walbro in-tank pumps (quality pump)
Spiral trap design around fuel pump keeps pump wet at all times
Two additional baffles installed in tank to prevent fuel slosh.
Stainless tank straps provided

Bad points: They do not assemble and install fuel level sender in tank even if you purchase the sender from them .
Received the fuel tank dirty inside (I had to thoroughly wash the tank)
Fuel tank straps do not take in account tank is not recessed to conform with tank braces above.

Wiring the fuel pump is a matter of taking the hot lead from the Squier engine harness fuel pump relay and running it to the + side of the pump. The – is grounded to frame.
The fuel sender 73-10 ohm, is wired to the original fuel sender wire and grounded from a mounting screw.