Here's some of the things they did to make it a winning drag racer:
• Every other impeller blade was removed from the water pump and a larger pulley installed.
• A larger pulley was also installed on the alternator.
• The right rear spring hanger was made longer than the left.
• Each leaf spring was tied every 4 inches ahead of the rear axle.
• The car’s right side wheelbase was made 1 1/2 inches longer than the left side to enhance deep staging.
http://www.hotrod.com/articles/decades-sitting-storage-hubert-platts-historic-1969-ford-mustang-cobra-jet-drag-team-car-back/
