I found a guy in the southeast US that is awesome. True oldstyle craftsmanship. They were made in 34 with a variety of ash. I've got a 34 1 1/2 ton I'd like to do, and asked for a quote on the wood. It was something like $2300 to do the whole cab. I'm sure it is worth it.
If you want an email address, let me know and I'll connect you to him.
Good luck!