This was news to me so sorry if its repeat. Obviously the interior and rear has changed. But as a newb, i can prob also consider a used 07 Shelby too.
"Stock Power Ratings Ford says the '07-'09 Shelby GT500 makes 500 hp and the '10 GT500 makes 540 hp. But Kenne Bell says they both make 640 hp with his blower on 91-octane fuel. How can that be? Isn't the new Shelby a more powerful engine?
In stock form it is, but the power gain Ford realized with the '10 Shelby came strictly from its electronic tuning, says Kenne Bell. To make their point, Ken Christley showed us two dyno sheets from the KB dyno. The first was from a stone-stock '07 Shelby Ken had tuned, the second was from the '10 shown in the photos. Both cars received the exact same tune by Ken, both were mechanically stone-stock, and the two dyno tests lay right on top of each other like a pair of back-up runs. That would say the GT500 mechanicals are the same, and the difference is electronic."
KB Blower | 2010 Ford Shelby GT500 Review at Automotive.com
"Stock Power Ratings Ford says the '07-'09 Shelby GT500 makes 500 hp and the '10 GT500 makes 540 hp. But Kenne Bell says they both make 640 hp with his blower on 91-octane fuel. How can that be? Isn't the new Shelby a more powerful engine?
In stock form it is, but the power gain Ford realized with the '10 Shelby came strictly from its electronic tuning, says Kenne Bell. To make their point, Ken Christley showed us two dyno sheets from the KB dyno. The first was from a stone-stock '07 Shelby Ken had tuned, the second was from the '10 shown in the photos. Both cars received the exact same tune by Ken, both were mechanically stone-stock, and the two dyno tests lay right on top of each other like a pair of back-up runs. That would say the GT500 mechanicals are the same, and the difference is electronic."
KB Blower | 2010 Ford Shelby GT500 Review at Automotive.com