J, I'm still working on a metal alternative. It's fallen WAY behind.... sorry...
J
Amigo, you have nothing to apologize for.

Briwax. It's not a moving part so I see no reason it wouldn't last as long or longer than the original because mine isn't slotted in the rear. I'm in Chicago so we'll see what happens this coming season. Certain woods handle climate change better than others too.
Sent from my LG-H810
If you have a thin scrap piece, send it out here. I can protect it with whatever you want me to and let it weather on the dash for a summer. That should give a good idea on how the wood would tolerate the summers here.