The US Cobra intake was made from 1993 to 2003. Ford legally has to provide parts for cars for 10 years, so once this obligation was complete, they discontinued it.
If you buy the Ford Racing Kit, it was $400 or so. The Intake would have an F3 part number and the lower would have an F8 part number (except 93-97 kits's would have an F3 lower). Other than the finish of the intake, it's identical to that off a 1993 Cobra. So whether or not the intake came from a box, or off an actual '93 cobra makes no difference...same thing.
After 2003, it was made by some chinese company that bought the tooling and rights to make it. There are issues with it, and i wouldn't put one on my car if it came stuffed with $100 bills and cheap chinese wives.