When I got my 99 it had a drop in. When I took it out, much of the paint in the bed was gone. Abraded away by sand/dirt trapped under the liner. Fortunately no rust as the constant sanding action took care of that too. I put in a linex spray in and was very happy. I plan to do that with my new 2016 too. But on the new truck I wanted a rubber bed mat. I couldn't find one thick enough so I made one from a stall Mat that I picked up at the farmers co-op. It's 3/4" thick and I just cut it to length and did cut-outs for the wheel wells. It's heavy! About 150# before trimming and prolly 130# now. I really like it a lot. It'll go back in after the line x too.
I also had a tri fold tonaue cover on my old truck. It was called a trifecta. Really well engineered. I picked one up for this truck as well. Looks and works great.
Hope this helps.
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