Which year is that has a Entrant of belond equa-flow / calif. muffler?
CREATE TABLE table_name_88 (year VARCHAR, entrant VARCHAR)
SELECT year FROM table_name_88 WHERE entrant = "belond equa-flow / calif. muffler"
### 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"