GhostfaceKillah said:
http://fast-autos.net/ford/03fordcobra.html
Theres ur fastest mustang out there (stock, from factory)
http://fast-autos.net/nissan/nissanskyline.html
And theres your 1999 Nissan Skyline GT-R R34
The mustang has a good .6 seconds over the skyline in the 0-60, and is alot more powerful, so in theory, it would win, unless the driver was a complete idiot.
If you compare the fastest Mustang to a regualr R34, it isn't exactly fair. The Skyline you comared it to is the basic GTR and is 4 years older then the Mustang. Lets compare it to the fastest stock production Skyline, the N1. The N1 engine is not resticted to meet legal regulations like the other GTRs since it's not a street car. It's produced for racing.
http://www.nismo.co.jp/M_SPORTS/2000/news/news2/spec.html
For a translation, go here
http://babelfish.altavista.com/babelfish/
The main stats:
Engine:
RB26DETT
490 hp @ 7200
Torque: 55KGM @5600RPM (I'm too lazy to convert KGM to lbs right now. ;p It's probally around 500 somthing)
4WD ATTESA E-TS PRO
I didn't find the 1/4 mile or 0-60 for this. But, if the base Skyline r34 with 280 hp is only 0.8 seconds slower in the 1/4 then the Mustang that has 390 hp. And the N1 has 490 hp.. yeah...
Also in the Basic R34 vs the Mustang Cobra, the .6 seconds of the 0-60 would make the Mustang faster in a drag (it's 0.8 faster in Drag). But if it was a circit track the GTR would most likely win. The R34 can make up for that lost time in the straights with the corner exiting speeds.
In any case, the GTR is desinged for circit racing car and the Mustang is for drag. They're differnt breeds.
And if you want to talk about company tuned production cars...
1999 Nissan Blitz Skyline GT-R R348
http://www.supercars.net/cars/1999@$Nissan%20Blitz@$Skyline%20GT-R%20R348g.html
850.1 bhp @ 9300 rpm
708.8 ft lbs @ 7500 rpm
Top Speed: 343.3 kph / 213.3 mph
0 - 60 mph: 3.0 seconds
2000 Ford Mustang Boss Concept
http://www.supercars.net/cars/2000@$Ford@$Mustang%20Boss%20Conceptg.html
855.0 bhp @ Not Available rpm
790.0 ft lbs @ Not Available rpm
My guess would be that the Mustang would win in the drag, and the Skyline would win on the track.