HOUSTON (AP) - The Houston Cougars have a new coach, offensive coordinator and quarterback, and they unveiled new-look helmets and uniforms before their first practice.

Rookie coach Tony Levine promises none of the changes will throw off the high-powered offense that's become the program's calling card.

Behind record-setting quarterback Case Keenum, the Cougars led the nation in total offense (8,387 yards) and scoring (49.29 points per game) last season. The Cougars came within one victory of crashing the Bowl Championship Series, but Coach Kevin Sumlin left to lead Texas A&M and he took offensive coordinator Kliff Kingsbury with him.

Levine has been a Houston assistant for four years, and he brought in Mike Nesbitt to orchestrate the offense. David Piland is the new quarterback.