CREATE TABLE table_1405704_1 (chassis VARCHAR2, season VARCHAR2, engine VARCHAR2)

What kind of chassis did a winning car with a Foyt engine have in 1979?
SELECT chassis FROM table_1405704_1 WHERE season = 1979 AND engine = "Foyt"
SELECT "chassis" FROM "table_1405704_1" WHERE "Foyt" = "engine" AND "season" = 1979