The only innovation out of the SRT4's 230 hp 2.5L is the price. Sorry, but both Japan and Germany have cars that smash that Power/Displacement ratio, on naturally aspirated cars.
The other American "innovation" that was listed was the 405 hp corvette Z06 engine. Yet again, only good thing about this is the price. BMW got the same power numbers out of a much smaller V8 then the LS6.
O, and dont forget the SMG and Tiptronic (stupid yes, but better then a regular automatic) are from Europe too.