These eibach wheel spacers are in perfect condition. These are hub centric and bolt on to your existing hubs so that your wheels can be bolted on spaced out 25 mm (1 inch). Selling the pair for $100 shipped.
http://www.summitracing.com/parts/eib-904250103/overview/make/ford/model/mustang/year/2004
http://www.summitracing.com/parts/eib-904250103/overview/make/ford/model/mustang/year/2004