I am confused. You put Lizard skin on the backside of the panels?
As an experienced pick-up owner I never hear structure noise from the cargo box, maybe they do not exist.
Bed liner will contribute somewhat to averting panel impact damage, but it will not be OEM truck-like. Light duty.
After two long term Tundras, I recently bought a Honda Ridgeline. The cargo box has SMC composite panels in the steel body. The OEM bedliner was not UV resistant and evaporated in spots leaving fiberglass exposed.
I removed all the panels and double coated them with Durabak-18 through Amazon. It comparison tested very well. It comes in colors and my gray matched the leather interior.
jim
Project Farm bedliner review: https://www.google.com/search?q=Proj...RY-Z0ObgY,st:0
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