Auggie is right. Pretty much certain, you have a dog with a good bit of some sort of pit in him. Calling him something else isn't going to change that. Like Auggie said, you may as well save your money and just make something up. Any adopter needs to KNOW if he is mostly pit and be comfortable adopting that and aware of any breed tendencies they will be taking on.
What part of the country are you in?
What part of the country are you in?