I am losing sleep over it though... I have to do something with it.
A VERY large mudhole?
I can't even walk by it to do something else to it with out wondering how on earth I'm going to deal with it. I saw a video with a fella that used a product called Citrus Strip Gel. His results were pretty damn good... but he could have been dealing with some rattle can liner from Walmart too. I may buy some and do a test spot... but I really don't want to fully strip the truck.
Whoa! Take a deep breath.
At our ages, we're supposed to enjoy things, and try to not stress out on stuff. If I may suggest, just start driving it and do focus on the mechanicals, first, while you "think" (not stress) your way through the body finish plans. B2's are a BLAST to drive (even mine, a lowly '90 2WD stock street truck), and thus they're great therapy.
Some thoughts here, on possible approaches to yours.
IF the current bedliner chips off easily, a chisel can be used
by hand only to effectively strip the truck. This option is good only if the current bedliner has poor adhesion to the paint or primer under it, and it's not as bad of a job as it sounds.
IF the current bedliner is well adhered, at least you'll have a good base. In this case, I'd go over it with a DA palm sander, to flatten the texture some before doing a good, new bedliner finish. Although I do have an air DA, my favorite sander is an electric Makita quarter-sheet DA sander.
AND, don't rule out a stripper, until you've tried it.
You're likely needing to experiment some, to get a better idea of what you have, and where you can go with it. But, I definitely think, that when you do do something with the finish, it'll be one totally sharp truck.