Restaurant Brands New Zealand says it has gained approval from Yum! Brands, the parent company of Pizza Hut and Taco Bell, to acquire the only franchisee for those stores in Hawaii but the time taken for sign-off means full-year profit was at the lower end of guidance. The fast-food retailer announced its conditional agreement to buy Pacific Island Restaurants , which has 82 Taco Bell and Pizza Hut stores, last October and had expected to complete the $US105 million deal by late December.