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2010 Roush 427RWhile the Rouscharger blower is a familiar face, Roush really outdid itself with the execution of the '10 kit. Rather than routing airflow from the driver side all the way over to the passenger side, as in the prior kits, the Firecracker Roushcharger features a driver-side inlet. This inlet is fed in a straight shot thanks to a Roush lid for the stock airbox. This arrangement keeps things on the up and up for emissions, and still makes use of Ford's new grille-fed induction.