Before the year 1963 what was the fewest points the climax v8 engine had?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT MIN("points") FROM "complete_formula_one_world_championship_" WHERE "engine"='climax v8' AND "year"<1963;