CREATE TABLE table_15671 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

What chassis was paired with climax straight-4?
SELECT "Chassis" FROM table_15671 WHERE "Engine" = 'climax straight-4'
SELECT "Chassis" FROM "table_15671" WHERE "Engine" = 'climax straight-4'