I have not asked.
Here is where I'd ask first. Several years ago I bought some tires and visited them, seem like good folks.
http://www.ricksontruckwheels.com/Here is another, well respected wheel resource.
http://www.wheelsnowinc.com/capabilities/building.php I have not dealt with them but in previous conversation about some rims they were helpful and professional.
Another often mentioned place for this work is
http://www.stocktonwheel.com/ I had some wheels made some time ago and it was a terrible and miserable experience. I've heard the ownership has changed but I'd still be very hesitant, they'd be the very last place I'd call.