Can't give you a direct answer, but in my case I was finding it difficult to find Dogos that were unmistakingly Dogo Argentino in their traits etc.... Found a good breeder in San Diego, and it looks like there is one in MN, but I ultimately went with a breeder in Peurto Rico.
Keep in mind that if you can't pick up your dog in person you're looking at a plane ticket either way, and assuming you're in the States, our money goes pretty far in South America. I've been obsessed with the breed ever since traveling to Argentina 8 years ago.
Good luck!