http://www.autoblog.com/2011/07/28/2...enteel-muscle/
Discuss as appropriate. All I will say is, it is a 4.0 litre engine with 518ps. And if you ask me how I know, its a secret
. There is also a similar engine 4.0 engine with 420ps also being developed, though that is not going to be for a 'S' variant I guess.