Sparkling Kiwi Lemonade

8 medium kiwifruit, peeled, divided. 3/4 cup sugar 3/4 cup lemon juice 1 liter carbonated water Slice two kiwi into small pieces. Place in ice cube trays and fill with water. Freeze. Cut remaining kiwi into fourths; place in food processor. Cover and process until smooth. Strain; discard pulp. In a 2-qt pitcher, stir sugar and lemon juice until sugar is dissolved. Stir in kiwi puree. Refrigerate until chilled. Just before serving. stir in carbonated water. Serve over kiwi ice cubes.