Sounds like S550 is going to be the designation for the new platform for the 2015 Mustang. I think it's probably time for complete change. Still waiting to see a confirmation on what it will actually look like though.

2015 Ford Mustang designated as S550 platform | Mustangs Daily

 

Interesting article, I am very excited for this new design.

 

Interesting for sure!! Not sure if I am excited or just curious to see the reaction from everyone all around lol.

 

I want a twin turbo 5.0!


But me thinks it might be a little cost prohibitive.