Jeep Repair: fuel, vent hole, vaporlock

Question
I HAVE A 1983 WAGONNEER 360 V8 ALL OF A SUDDEN IT STOPPED GETTING GAS,I CHANGED THE FUEL PUMP AND IT RAN FOR ABOUT 30 MIN. THE I SAW BUBBLES COMING INTO THE GAS FILTER,BUT IT STILL RAN THEN I PARKED IT AND THE NEXT DAY IT WOULD NOT START AGAIN,I THOUGHT ABOUT VAPORLOCK BUT IT SHOULD START AFTER COOLING OFF OVER NIGHT. YESTERDAY I CHANGED THE FUEL LINE FROM THE GAS TANK TO THE FUEL PUMP AND STILL NO GAS,I EVEN TOOK THE SENDING UNIT OUT OF THE TANK TO CHECK TO SEE IF IT WAS CLOGGED UP BUT IT IS NOT,DON'T KNOW WHAT ELSE TO DO,PLEASE HELP.

Answer
Just for test purposes, remove the gas cap, try to start the vehicle and if it starts and runs, you have a plugged vent hole in your gas cap.
You might have a cracked outlet tube at the fuel tank as well. You are sucking air from somewhere and there are not all that many possibilities.
Just because a fuel pump is  new does mean it is good.  You might try another and see if the problems corrects or persists.
You stated that yoiu changed the fuel line from the tank to the fuel pump or did you just change the rubber parts.  You might have a pin hole in the metal tubing as well.  Make sure the clamps are tight.