VMS Racing shift boot adapter clip WITH set screw in T-6061 billet aluminum that will fit most 2005-2014 Ford Mustang with manual transmissions including the 2005-2009 Shelby Mustang (WILL NOT FIT THE 2010-2014 SHELBY MUSTANG). Dont limit your selection to only shift knobs with built-in boot retaining clips. From VMS Racing comes this billet aluminum shift boot retaining clip that allows you to hold the shift boot up independently on your shift knob. This allows the use of a wider variety of shift knobs on your 2005-2