I have a 07/2009 build UK car with base stereo. My 6.5" were bolted and not glued. Maybe this is a slight difference between US and UK specs?
Turbo Dynamics Hybrid Turbos, Wagner Intercooler, DPF Delete Pipe with Sports Cat, Ecotune custom map ~ 422bhp & 618ft.lbs
Ohlins R&T with custom Swift rears