I believe that Stockton Wheel, Stockton, CA. will build you just about anything. I have used them and was satisfied with their product but they are not the quickest or easiest to do business with. . . Chuck
Definitely use Rally America. You can do a search over on the HAMB and find him. He is a HAMB Vendor. And rock solid reliable with great products and fast service.
I've heard A LOT of horror stories about Stockton Wheel. I would not touch them with a ten foot pole...