Fuel Fluke

I ordered a new fuel tank, 3/8's pickup, straps and a Carter mechanical fuel pump from RockAuto.com for the 67 Notchback I bought 2 months ago. Everything delivered to the house $297+change. The car had been sitting for 2 years and had the original tank. Everything bolted in fine and the car started right up and runs great. The previous owner had reported that the only thing wrong mechanically was the fuel pump. Apparently he was right. With all you've been through, that's what I'd do. If that fixes it, great. If not, I'd take a look at the carb too. I'm no carb wiz and I just don't have the time and patience , so I'd try a different carb ( borrow one maybe ) and see if that makes a difference. Then you can get your Holley up to par or buy a new one. By then your pretty much new from front to back and with any luck you'll have solved the "Mysterious Case of the Fuel Fluke". Good Luck!