69 340 problems

Anyone consider the fuel line from the tank to the pump ??? I ha 70 fury years ago that did the same thing as this gentalmans car and we replaced most of what you all mentioned...My dad told start at the tank and work our way forward and sure enough down under the rockers between the front and rear doors was the problem the metal fuel line was partly pinched and restricted the fuel flow...we replaced the bad part with a chunk of rubber fuel line and problem solved it ran awesome after that.....