ok my bed has a spray in bed liner in it not the good stuff its the cheap stuff from walmart and looks awful iv worked in a body shop for a little while and been around it forever i know stripper would take it off pretty good but that is rough to use and hard on what your using it on, a da stripper would do it if i had a couple days to waste on it and alot of sanding disks lol
look at this pic and tell me if you would strip it and paint or cut it all out and put weld up the whole top of the bed completely flat which would look better