A quick update:
My 19 year old Yamaha 150 is still running perfectly and we had another great summer with the kids. We used the boat almost every weekend, and it has never failed us. The only issue in the last 6 months was a failed trim pump, fixed that & moved on.
I wanted you guys to see the incredible handiwork of a guy called Scott Cambia, he runs Vector Imaging and produces custom-designed dash panels. He can design the layout if you want, in my case I sent him an Illustrator file with the design I wanted and he created 2 panels for me. I couldn't be happier with the results, check them out:
Before:

After: