The trash you are seeing in the carb is probably from the tank and not the fuel lines. First thing I would do is either get a new tank or have that one cleaned and coated internally.
I prefer not to use the aluminum fuel line on a street driven car. It can work harden if bent too many times, and small rocks and gravel from the road can peen it and weaken the aluminum over time. Some blends of pump gas can also erode the aluminum. The aluminum is fine it your car never sees much road time but for a street driven car, I would pass on it. Steel or stainless steel, or nylon/plastic is the way to go, although you may have problems finding the correct fittings for the plastic line.
Dynacorn 67 fastback. Dart 363, Close ratio Magnum 6 speed, 3.70 Eaton Truetrac, SorT suspension. Still in pieces.
'14 SHO with most all the bells and whistles. Stock for now.