Pitt bull Puppy whopper bloodline very calm dogs been growing up with kids since day 1 in Phoenix, Arizona For Sale

What's whopper blood line? 15 years a go they breed French mastiff to American bulldog and breed them back to pits to get the dogs to be big but calm at the same time still have the look of Pitbull but bigger and calmer.
We are not having hurt time to find them homes at all what we are looking for is responsible dog lover ,family's that really give them the attention they wants.
I have been working with dogs k9 police training over 15 years and dog psychology back in Sweden if you need any help as far as obedience training I will be more then happy to give you advice so not only you will be happy also your dog will have a great life with you and that's what we are looking for good family's
They have been house trained already all the shuts and they are ready to go to there forever lovely homes