With only seven days left to finish the '65 Mustang, Duane cracks under the pressure with fewer crew members to complete the job and key parts still missing. Just when Boyd's crew reaches their deadline in time for the car to head to upholstery, Charley is put to the test again when the engine's paint job cracks, leaving him to pull another all-nighter for his team. Will this American beauty reach the finish line after its most severe crisis yet? The Mustang project must come to an end — whether or not the car is completed in time for the surprise reveal at Indy.