Detroit in January isn't exactly the proper place to go topless in a 650-horsepower tire smoker, but that doesn't mean rumors of the 2013 Ford Shelby Mustang GT500 Convertible's impending debut at the 2012 Detroit Auto Show aren't accurate. And these spy shots prove that the car is very much ready for its big unveiling.

We're expecting the soft-top Shelby to pack the same 5.8-litre supercharged engine as its hard-topped sibling, which means the asphalt will be punished with those aforementioned 650 ponies along with 600 pound-feet of torque. For the coupe, that power equals a top speed of over 320 kilometres per hour.

So, here's the big question: Will the 2013 GT500 Convertible be the least expensive way to a wind-in-your-hair blast at supercar speeds? While we all ponder that question, let's all take a gander at the spy photos in the gallery above. And let's pray to the god of sunshine that the GT500 Convertible does indeed drop its top in the snowy climes of Detroit in January.

News Source: KGP Photography