KRX 1000 DIY Stereo install part 1

Here is a look at what products I have sourced to Install a stereo my way in our KRX 1000. Hope this gives you some ideas for your install soon.
SKAR Subwoofers - https://smile.amazon.com/dp/B019WYPLI...
1/2" speaker spacers - https://smile.amazon.com/dp/B00ITN4IR...
7 Band Equilizer with Bluetooth - https://smile.amazon.com/dp/B084BN268...
6.5" coated Speaker boxes - https://www.ebay.com/itm/143773137371...
Polk Atrium 5 speakers (white, black out of stock now but you can find elsewhere) - https://smile.amazon.com/dp/B00378KMF...
1" square tube caps - https://smile.amazon.com/dp/B01NBI194...
1" steel tube (this is 72" but I bought 48" length) - https://www.homedepot.com/p/Everbilt-...
Polk MM652 marine speakers - https://www.caraudiogiants.com/produc...