The new Nissan Skyline GT-R produced 473bhp from it's twin-turbo V6 engine..
Refer to my thread for more info on the new GT-R
http://www.sgforums.com/?action=thread_display&thread_id=286282&page=0Definitely not every part of the car is produced by themselves..it won't be economically viable..some parts will definitely be outsourced..examples of outsourced parts include windows, windscreens, springs and dampers (Note: Peugeot is famed for producing their own spring and dampers..) etc..
Added: There's no doubt some parts of the engine in the new Skyline GT-R is outsourced to other companies outside, but technically speaking, the engine is produced by Nissan because Nissan designed and build the engines themselves..