CREATE TABLE table_53368 ("Year" FLOAT, "Team" TEXT, "Co-Drivers" TEXT, "Class" TEXT, "Laps" FLOAT, "Pos." TEXT, "Class Pos." TEXT)

Who are the co-drivers the risi competizione gt2 class that went under 329 laps and recorded a DNF?
SELECT "Co-Drivers" FROM table_53368 WHERE "Laps" < '329' AND "Class" = 'gt2' AND "Team" = 'risi competizione' AND "Pos." = 'dnf'
SELECT "Co-Drivers" FROM "table_53368" WHERE "Class" = 'gt2' AND "Laps" < '329' AND "Pos." = 'dnf' AND "Team" = 'risi competizione'