My understanding is that the first Gen B&B headers are "shortys" or short tube, which are approved by CA. I beleive the Gen 2 are long tube, which are not approved in CA.
Running without Cats is a dead end in my opinion. It is a myth that Cat removal frees up a lot of HP. That was once true with early Cats, but now one can buy high performance Cats that hardly are noticed.
Then there is the problem of when you remove Cats you are obviously tampering with emission equipment, and it could have some consequences. Emisison laws have been loosely enforced so far, but that can change overnight. Don't think so - ask Jesse James. It is so easy to do a visual inspection for missing Cats - any cop can do it; and cops can enforce any law including emission laws.