This is a BRAND NEW Classic Designs Concepts Shaker system for a 2011-2014 Mustang GT (NOT BOSS!) It only fits the 5.0L. It sells for $699 at www.americanmuscle.com. I bought it, but have had it over 60 days and they only allow returns up to 30 days.
I had a 1970 Mach 1 with the shaker and wanted to put this on my GT. Unfortunately, I didn't realize adding the Boss 302 intake would not allow me to use the shaker. My loss is your gain. The unit is complete and unused!