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

### Instruction:
What is the highest overall pick that has c as the position, with an NFL Draft greater than 1977?

### Inputs:
table_name: table, columns: ['Player', 'Position', 'Overall Pick', 'Round', 'NFL Draft', 'Franchise']

### Response:
SELECT MAX Overall Pick FROM table WHERE Position = c AND NFL Draft > 1977