I used oak years ago and put a stain and varnish on it ,the varnish and new look is still good on the underside ,on the top not good one board is buckled up all the varnish is long gone .I think the u.v from the sun did a number on it the box had a toneu cover on it and the truck was covered for winters .I was thinking of maybe a black ash with a tong oil finish.
