dunno if its been "swapped" or not ...........but I just yesterday (and last week) replaced my fuel pump (yestrday,correcting a mistake i made from last week,Ugh) .....Replacing it WITHOUT dropping the tank ,to me was very VERY stressful. ...... So yestrday,aftre the truck acted like it were running out of gas almost ...I had to go back in & correct my mistake. THIS time,I loosened the 2 15mm strap bolts,allowing the tank to come down about 2" ,not much but it helped access the whole a bit better. I could even get to the hole with a flashlight & peek around the gas tank floor before gas fixation started setting in lol BE CAREFUL there* ....as someone else mentioned,perhaps get the driveshaft out of the way for better access. - I didnt,but probably should have. ....Sometimes taking a shortcut,can ultimatley make the job longer & harder when its all said & done.