Depends on the model.
The fastest: 911 GT2 [330 kmph][205 mph]
The most original: 911 Turbo [310 kmph][193 mph]
The newest 911 turbo s is even faster.
I bet no one knows how many 2013 Porsche 911 turbo s cabriolet were built?
If you are talking about the 2016 Porsche 911 GT3 RS, its top speed is listed at 202 mph.
202mph
The Porsche 911 GT2 RS tests at a top speed of around 330 km/h (205 mph). Interesting bit of info: The Porsche 911 GT RS was convinced out of a Skunk-works project.
194mph/312kph S. Model 196mph
The 2009 Porsche 911 has a 6-speed manual.
The 2008 Porsche 911 has a 6-speed manual.
The 2005 Porsche 911 has a 6-speed manual.
The 2006 Porsche 911 has a 6-speed manual.
The 2004 Porsche 911 has a 6-speed manual.
The 2007 Porsche 911 has a 6-speed manual.
The 2001 Porsche 911 has a 6-speed manual.
The 2003 Porsche 911 has a 6-speed manual.