I agree with Bygracealone!! That might not be the easiest way but would give the best result!!
To use starboard or anything like that you are going to have to some how level the space then add the starboard.
How about removing the dash, sanding it, using some kind of putty to fill the cracks, and reshape the corners, paint and reinstall?? Maybe some 1/4 round wood under the edges for when you screw it back down? They even sell plastic dash that you cut and stick in cars, with wood like finish and stuff, would cover the old holes if you wanted to remove a gauge or something. Just a thought?
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1986 V20
Old Fishermen never die, we just SMELL that way!!
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