I finally got around routing a 3/8" fuel hose with a transparent fuel filter from the fuel hard line to the windshield and back to the fuel pump. The fuel filter was right in front of me when driving. Upon start up and idling, the pump filled the fuel filter (approx. 2" in dia and 4" long) about half up to the middle. I did a test run, cruising around town with a couple of kickdowns and finally to highway speed around 60-70 mls per hour. The symptoms came back from 50 mph and up. I noticed two things: #1 The stream of gas is not a continous one. Sometimes it´s a thick, hard stream, sometimes no fuel at all, sometimes a slow stream, sometimes "spitting". I did not notice a direct correlation between how the fuel was delivered and what position the gas pedal is at. Is this normal? I never gave thought to how EXACTLY the fuel is delivered to the carb and could imagine that engine vacuum and fuel level in the carb bowl play a role also, not only engine speed (i.e. revs, i.e. fuel pump lever movement). #2 At higher speed, the fuel level in the filter was VERY low, lower than the paper element. That was when the car started acting up. So apparently the engine pulls more gas than the pump can deliver (for some reason). Any ideas to the above? I do have to admit that the 3/8" fuel hose might have gotten a little squeezed between the hood and the rubber seal at the rear of the engine bay, but I don´t think this compromised the test run too much.