[mpg_numbers_guy]

I used foam board to build it up and get a flat/level surface for the plywood. Used a knife to carve out the areas for the rises in the floor and electrical wiring. The underlay underneath the foam board prevents the foam board from squeaking in case it rubs against anything from vibrations on the road. The frame around the spare tire area is made of 2x4s cut in half to support the lid and prevent warping under use and weight.

It's definitely getting a bit quieter whenever I add stuff. I can't compare to stock since it's been a while since I've driven the Insight stock, but it's definitely quieter than when I had everything out.