2019 Honda Civic Prepping for a fiberglass enclosure

I start prepping for a custom built fiberglass subwoofer enclosure in a 2019 Honda Civic. I also try to explain how the impedance and wiring of a subwoofer works and how to install rivet nuts (nutserts) to mount the fiberglass enclosure. Here is a list of tools and materials that I use throughout the build: Rivet Nut Setter Kit - https://www.amazon.com/dp/B003TODXQW Scotch 2” Painters Tape - https://www.amazon.com/dp/B00004Z4DU Fiberglass Roller Kit - https://www.amazon.com/dp/B07H3MY6QL Fiberglass Chopped Strand Mat - https://www.amazon.com/dp/B07GN1BLC4 Fiberglass Resin - https://www.amazon.com/dp/B000BOC01M Milescraft Circle Guide Kit - https://www.amazon.com/dp/B07VNGTGMV NVX Speaker Wire - https://www.amazon.com/dp/B00KMBL196 Scosche Line Output Converter - https://www.amazon.com/dp/B00LIAHSM4 3M Painters Plastic - https://www.amazon.com/dp/B00IOQJQPW GolfWorks Double Sided Grip Tape - https://www.amazon.com/dp/B07CGWHGHZ Lisle Automatic Center Punch - https://www.amazon.com/dp/B000HTAH70 Banks 23 Ga Pin Nailer - https://www.harborfreight.com/23-gaug... Fastenstrong 1” 23 GA Pin Nails - https://www.harborfreight.com/1-in-23... Holdpeak Multimeter - https://www.amazon.com/dp/B07QLRGT9G Mictuning Trim Tool Kit - https://www.amazon.com/dp/B01KXN7LE6 Chip Brushes - https://www.amazon.com/dp/B078XJ2DCJ Mixing Cup - https://www.amazon.com/dp/B0023UPORY