Wow this makes the one from the Boss LS look cheap. I'm hoping our friends at Ford Performance offer this part for sale which should drop it significantly. Full retail is $1,711.
http://www.fordparts.com/Commerce/PartDetail.aspx?n=GrbFeTq5ZO5EF8QG383f9A%3d%3d&id=325945545&m=2&search=true&year=2015&make=Ford&model=Mustang
http://www.fordparts.com/Commerce/PartDetail.aspx?n=GrbFeTq5ZO5EF8QG383f9A%3d%3d&id=325945545&m=2&search=true&year=2015&make=Ford&model=Mustang