Texas, not sure what the 366DGW is. Best person for custom reamers is Dave Kiff at pacific tool. He is very knowledgeable and helpful.
Another company I just bought product from was Dave Manson. Also very helpful and pricing was competitive.
I have product from both of these companies and am very happy with their quality. You may also want to check out Midway. They carry a surprisingly wide variety of wildcats (all PTG reamers) and one may be close to what you want.