Short of a boneyard, you're at McKee's mercy.
For what it's worth, I made a seat using mahogany for mine.
Someone had painted the interior blue, so now it looks more like a whaler than a McKee. Unintentional, but it just worked out that way.
You sent me scans some time ago and they were nicely done, but I don't know how to transfer that to plastic or whatever to make new pieces. Any ideas? I guess that I could try to have decals made and use those.