I thought so, ugh!
Looks like one of those, as long as you have it all a part you may as well replace the fuel pump too. lol.
After reviewing your procedures I thought; wouldn't it be easier to remove the truck bed to gain access to the top side tank components?
I bet you do get asked that quite frequently.
Unfortunately I don't have a lift in my garage (but I sure would like one).
I recently had the bed lined so the mounting bolts are exposed and rust free. So I figure disconnecting the fuel filler, unbolt the bed, slide or lift it out of the way and perform the tank work.
Thanks for the help!