Bedlinerbehind quarter panels?

Just ordered Raptor liner for my Bee as well. I wanted to simulate the factory undercoating in the trunk area and quarters. I have a 69 Coronet parts car that will be used to see how the factory sprayed it before I spray my new quarter skins. I like the look on three woods car. I might as well use it on the inner roof too like Lowhound. Product should arrive next week. I'll have this weekend to prep the inner quarters.
HR 20

I used Rapture Liner, then painted body color. Wish I had purchased the tintable type