If I ever get with truck with a POS plastic bed liner I trash it and have a Rhino liner blown in. Rhino makes the best liner you can buy period. Spillar did the liner in my last truck. The box is probably a Better Built brand and it was just rebranded with a Chevy logo. The Better Built uses the same machine type welds your box has instead of the more neat welds you get when it's done by hand. That slick drop in liner is going to allow stuff to slide around and smash up the box. I had a Better Built box on one of my trailers before. Lots of truck boxed are rebranded and sold under different names.