I have an American Bulldog/Pitbull mix but I just want to recommend that you find a breeder with atleast a 2yr health guarantee. It will be worth it in the long run! EBs can have all kinds of medical problems and a good breeder will back up any genetic problems.
This is a link from AKC but go here:
http://www.thebca.org/
It can help you out a lot! I'll also post for breeder referrals on the bulldog forum I'm on. They promote rescue first but will ALWAYS supply a 110% good breeder if you're not wanting a rescue. I'll post when I get some referrals.