Ok, so after the new fuel pump the truck does run better but I guess the sending unit did not seal right. In the morning I came to a huge puddle of gas In the drive way. It probably leaked out like 3 gallons. When I did the pump I replaced the rubber o-ring gasket. The pump came with two gaskets one round o-ring looking thing, which i used to seal the unit to the tank itself. The other gasket was like a really dense foam ring, much lager. I did not use it because it did not look like the onld unit had one.

Any idea how the pump needs to be sealed?

Oh, and that stutter i Wasserstein fighting for so long, its back. Not as violent but its back, after about 65 of i am light on the gas the truck jerks and stutters.