Table schema:
CREATE TABLE table_name_18 (points INTEGER, rider VARCHAR, manufacturer VARCHAR, wins VARCHAR, rank VARCHAR)

Question: Wins of 0, and a Rank larger than 6, and a Manufacturer of kawasaki, and a Rider of massimo broccoli involved what highest points?
SQL: SELECT MAX(points) FROM table_name_18 WHERE wins = 0 AND rank > 6 AND manufacturer = "kawasaki" AND rider = "massimo broccoli"