SELECT "To par" FROM table_40989 WHERE "Winning score" = '71-66-70-67=274'
What is the To Par of winning score 71-66-70-67=274?
CREATE TABLE table_40989 (
    "Date" text,
    "Tournament" text,
    "Winning score" text,
    "To par" text,
    "Margin of victory" text
)