Where can i find bully kutta dog in US?

I am looking for a breed of dog known as "bully kutta". These are massive, very large and powerful dogs found in the bordering region of india, china and pakistan. Their size is intimidating but they are gentle giants who are very easygoing and laid-back. They were created by cross-breeding with mastiff for the intention of dog fighting. However, the dog fighting declined but the breed still continues in that part of the world and are kept as pets. They are very protective of their owners, and that's what I really like about them. I cannot find any breeder in US. Their image is in the link below and google has lot of info about them