http://www.carvin.com/products/single.php?ItemNumber=NT6&CID=GTR/K

How are these necks? Anyone have any experience with them?

Thanks!

Yes, they are very nice quality. You can order them with a paddle headstock too, so you can design your own.
The only 2 things I don't like are the skinny/flat shape of the back of the neck, and the flat fingerboard radius, but those are just personal preferences.