I had one on a Trs years ago and I think rember someone saying it is the same as one on a corvette. What year or anything else I don't recall. I might even be completely wrong, so just thought i'd add.
It's paint and the guy advertised through craigslist. He worked from his garage.
Do you live in the U.P.? Are refering to the area north east of Mackinac Island? If you had some pics of boating there and could post them , that would be great to see.
I don't know. I haven't GPS'd it yet. I was out today and having the buttons in my hand at all times is nice. I was cruising and came up on a decent wake, I bump the down switch and put the bow down a bit and what a difference on how the boat reacts.