ah ok. 99% of the mustangs I have ever dealt with of that body style were 03/04 cobras so I always figured they changed it with that body style.

One thing I always get a kick out of is the amount of people that will complain about certain things, swearing it's a big deal, when if you really were to put them in a situation where they had to guess, they'd never be able to tell the difference. IRS being one of those, 99% of drivers wouldn't be able to tell the difference, and even an experienced driver I don't think would really be able to notice much unless they were trying to really tear up a backroad or were on a track with turns.