Ok, I had some bad running problems after my rebuild. It would miss and stall out at Wide open throttle. I was able to depress the throttle slowly and rev it out no problems. After pulling stuff apart and re-sealing for vac leaks etc, i re-timed it and adjusted the new weber, but still had the same problems.. I pulled off the fuel pressure regulator and it ran fine, so I thought the problem was solved. After getting the car back from being painted, it ran fine, I put the air filter back on and replaced the exhaust, fired it up, and it runs like hell, way worse than before.. No joke, all I did was put on the stock filter assembly, and put on a MAF header back exhaust.. It is sputtering and missing all over the place.. the idle keeps coming up and down. What would cause this itermittent fuel problem? My fuel filter had some debris in it when I replaced it last time, could the tank be the problem? Have you guys ever had problems with the factory pumps not putting out proper flow intermitently? This is starting to annoy me. Right now it is on a truck being shipped to my new home in colorado.. I will have to deal with this when I get out there in January, so any help now would be appreciated.