Matt,
Again, Thanks for your excellent narrow gauge restoration.
Perhaps you should contact Randy Hees of the Society for the Preservation of Carter Brothers Rai;lroad Resources.
They care for a bunch of narrow gauge cars in Fremont , CA. He is a moderator over at the Rypn.org web site and you can send him a private e-mail from there.
They have built trucks from scratch and found narrow gauge wheel sets to use with them.
And thanks for the truck picture,
Now I have to find a reference to the Carolina & North-Western RR. Southeastern narrow gauge is a bit off my path.
Ted Miles