I was not happy with the first plate I made for my head unit. I did it in a rush so the cut was not great and I used too thin of lexan and the white was too bright compared to the rest of the boat. I also cut it in the same shape as the old head unit and it just didn't look right. I decided it would look better in gloss black that matched the little storage compartment door below it. Here is a finished photo as well as one showing how I mounted the head unit to the lexan.
New amp is in an installed. Really happy with how the everything sounds. I'm still trying to eliminate some vibrations from the sub. When I first got everything hooked up it sounded like the whole area around the help was going to fall apart. Lots of vibrations. I'm slowing getting them all worked out by adding some foam strips wedged between panels. I gotta I'm pretty impressed with that Polk MM 10.

This is just a fit test, final process was removing the paper backing, sanding down the lexan and applying Loctite PL adhesive.

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2005 Four Winns 230 Horizon
2014 Toyota Tundra CrewMax 4x4