My K5 at one point had a pretty hi-po motor in it and the previous owner ran it out of oil and stuck in a junkyard 305. Any way the truck has an electric fuel pump in it and flows way too much I suspect since the carb is leaned right out and it still smells like pure gas out the tailpipes. What do I need to rectify this problem? A fuel pressure regulator like this one http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3044&prmenbr=361 ? A new electric fuel pump? What? I thought that the carb could probably only take so much and it was the carbs problem but I rebuilt that and it only helped mildly. Not sure what kind it is since I do not have the truck here and won't get it towed here for about another month. Any help is appriecated.