Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_2508633_4 ( position VARCHAR, nfl_team VARCHAR )

### Question ###
What were the pick numbers of the defensive tackles chosen by the New Orleans Saints in the 1983 draft?

### Accurate SQL ###

SELECT position FROM table_2508633_4 WHERE nfl_team = "New Orleans Saints"