Hi Gents-
I will also be redoing the instrument panel on my 1991 Mako 231. The original plastic is cracking and the lexan hatches have a tendency to fall off.
Instead of starboard, I too am thinking of pulling a fiberglass mold off the original plastic Mako dash.
As far as rewiring and adding new guages, I would highly recommend that you look at the impressive job that Eddie Ring did on his Mako 21b....see
www.classicmako.com. He installed all new rocker switches, new circuit breakers, new wiring, the whole nine yards.