Which Wood Would You Use?

[Brobrian]

I'm going to make new planks for my '31 CCPU, although I have to admit the big splits in the current wood is very convenient for washing out dirt. Anyway, l sort of automatically assumed it would be white oak, but someone told me that oak doesn't hold up well in the exposure to sun and water that a truck bed gets.

So what have you made your bed out of?