The 99 Cobras had a recall due to thier poor performance when they were now (some only put down 235rwhp:nonono
Cobra owners were complaining about getting beat by GTs at the track left and right. Ford recalled the 99s. The recall consisted of a free flowing cat back, reprogrammed ECM, and either a ported, or extrude honed intake. The racalled cars were known to have "the fix".
Naz posted a thred that showed the different markings on the lower intakes and how to identify them.