CREATE TABLE table_69563 ("Year" FLOAT, "Team" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

Which Engine has a Team of Chesterfield Racing and include a Chassis of March 761?
SELECT "Engine" FROM table_69563 WHERE "Team" = 'chesterfield racing' AND "Chassis" = 'march 761'
SELECT "Engine" FROM "table_69563" WHERE "Chassis" = 'march 761' AND "Team" = 'chesterfield racing'