loosen your petrol cap(to release pressure)
DRAIN TANK
get under the car and loosen the straps holding the tank
it is possible to fit with tank still in car but its easier to drop tank out
loosen or remove filler hose
remove hoses (mark them so they go back the same )
drop tank
get acess to the fuel sender
undo the screws and withdraw the sender the fuel pump is attached to the sender unit
its a pain getting sender out ,just wiggle and jiggle and it will come out
goodluck
its not a difficult job