What engine was used by Ram Penthouse Rizla Racing in 1978?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "pts" real
);
SELECT "engine" FROM "complete_formula_one_world_championship_" WHERE "year">1978 AND "entrant"='ram penthouse rizla racing';