Question: What was the class position of the team that was in the 4th position?
SQL: SELECT "Class Pos." FROM "2-1628307-5" WHERE "Pos." = '4th';

Question: What is Class Pos., when Year is before 2013, and when Laps is greater than 175?
SQL: SELECT "Class Pos." FROM "2-1628307-5" WHERE "Year" < 2013.0 AND "Laps" > 175.0;