Read the FAQ and other opinions on here and replaced in tank fuel pump in 94 940 Sedan in 3 hours by pulling the tank. Did it on the ground on jack stands and air tools. Once the tank is out the sender unit comes right out and goes in very easily. The seal was a little tricky and could see it could be a real pain if it was done through the trunk. You don't have to twist the sender pump unit around, it goes straight in the first time. Could probably do the next one in half the time.