Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the engine(s) on the car before 1978 with ensign n177 chassis?

### Inputs:
table_name: table, columns: ['Year', 'Chassis', 'Engine(s)', 'Tyres', 'Points']

### Response:
SELECT Engine(s) FROM table WHERE Chassis = ensign n177 AND Year < 1978