These pictures are awesome. I never realized there were access "plates" behind the vinyl bolsters -- do they just unscrew? Anything interesting behind them? Please do keep posting pictures, especially of where all the systems are located behind the many panels!
By the way, not sure what you're planning to do with the dash, but I ended up doing mine with a 1/4 Acrylic panel screwed over the original fiberglass. Here's what it looks like and I've got a link to the CAD file. I had mine laser cut at International Marine in FL, but lots of of people can do it.
drive.google.com