Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_88 (year VARCHAR, entrant VARCHAR)
### Question:
Which year is that has a Entrant of belond equa-flow / calif. muffler?
### Answer:
SELECT year FROM table_name_88 WHERE entrant = "belond equa-flow / calif. muffler"