FastHemis.com - Hemi Performance Parts & Accessories Superstore FastHemis.com All Hemi and Mopar Performance Parts Superstore. Specializing in Chrysler 300, Dodge Challenger, Charger, Magnum, Viper, Neon SRT4, Jeep Cherokee SRT8, and more. superchargers, turbos, cold air intakes, suspension, anti sway bars,