This sounds silly but check it, you said new fuel filter, if you swapped an autozone for napa filter the input and output tubes are opposite. i had a very long problem with my rig, lurching and bucking then eventually would just bogg out and die. i changed everything i could; Distib, valve lash, water in tank, plugs, wires, capnrotor, carb rebuild, new vac lines, pcv valve, etc etc.. finally had a buddy from a dealership look at it and eventually noticed bubbles in my fuel filter, he traced the lines and they were backwards. just try swapping the lines to see if it makes a difference. lesson learned- always check simple stuff first
