I don't recall any problem with the pump staying into place in the tank, i guess i might have to drop it again to check.....u might be right because when i drive over a bump or something....the car starts hesitating.like maybe pump is not receiving fuel when the tank is at a angle or shaken...(maybe)..
.ima buy a fuel pressure guage...ill be glad when still issue is resolved because this car has alot of good peformance parts to be running as bad as it is.