HARD DRIVES

What is the difference between Borla Dual Port and Single Port Headers other than the obvious?

Is there a benefit to one over the other? The dual port is cheaper, or very close in price, depending where you look.
If you go to Borla’s website and choose a 1998 Subaru Impreza with a 2.2L engine, both come up as matching the car.

http://www.borla.com/catalog/

単孔式腹腔鏡下胆嚢摘出術Single port laparoscopic surgery ( Reduced port surgery )