ESPN publishes no stat lines for Ken Stabler. His career totals, as Wikipedia gives them: 27,938 passing yards, 194 passing touchdowns, 2,270 completions, 3,793 pass attempts, 222 interceptions thrown, 59.8 completion %, 75.3 passer rating.
Among the 2,587 NFL players with a career line on file, regular season. A place deeper than 300th is not listed.