After months of leaked images and drip-fed teasers Chrysler has finally released full details for its all-new 2008 Dodge Challenger SRT8 muscle car. The new model will be making its world debut this week at the Chicago Auto Show but it has actually been on sale since December of last year. The Challenger is the fourth vehicle to ride on Chrysler’s LX platform, succeeding the 300C, the Charger and the ill-fated Magnum, but unlike its siblings each SRT8 variant will come with a unique numbered dash plaque, carbon hood stripes, forged aluminum 20in alloys, and the SRT prepped 6.1L HEMI V8 engine complete with 425hp and 420lb-ft of torque.