And the 2015 IRS has a lot of the same issues as the 99-04 Cobra IRS did... Even for handling where you'd think the IRS would shine there are trade offs between a mustang SRA and IRS. I'm going to just 5 link my SRA and I used to be the biggest IRS nutswinger there was.
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.