Press Release: Silverhawk Championship Boxing has signed unbeaten cruiserweight BJ "El Peligroso" Flores (16-0-1, 11 KOs) to an exclusive promotional contract.  "We're delighted to add a talented fighter like BJ to our growing stable of champions," Silverhawk's Jeff Grmoja said. "We believe that he has all the right tools and dedication to become a world champion. BJ is the whole package. Not only is he a talented boxer, BJ is very marketable, too. He is well spoken with that clean-cut look and All-American character needed to become a real star in this business. Silverhawk Boxing is going to keep him very busy and put him on the right path."   Flores, 27, was born in San Francisco but now fights out of Phoenix. He is coming off a first-round knockout of Ali Supreme in May. Flores captured the prestigious U.S. National Championships twice (2001-2002) in the heavyweight division. He turned pro May 3, 2003 with a first-round TKO of Dallas Lane and campaigned as a relatively "light" heavyweight until moving to cruiserweight in his last fight.   Flores' next fight is scheduled for September 30 in Edinburg, Texas. He is matched in the six-round co-feature against Gary Dydell (8-2, 6 KOs). Flores is promoted by Silverhawk Championship Boxing, co-managed by Bob Cerbe and Willie Knox, trained by Danny Smith, and Lou Mesorana serves as his advisor.