Its a completely different design. The IRS exhaust runs under the rearend. You CAN install a IRS catback in a car with a SRA but you will have to remove the pipes every time you jack the car up.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.