No, the only coupe that Porsche makes with a back seat is the 911, and it's more of a 2+2 than a back seat.
Porsche Cayman was created in 2005.
The 2009 Porsche Cayman has 24 valves.
The 2008 Porsche Cayman has 24 valves.
The 2012 Porsche Cayman has 24 valves.
The 2010 Porsche Cayman has 24 valves.
The 2011 Porsche Cayman has 24 valves.
The 2014 Porsche Cayman has 24 valves.
The 2007 Porsche Cayman has 24 valves.
The 2014 Porsche Cayman has a 6-speed manual.
The 2008 Porsche Cayman has a 5-speed manual.
The 2007 Porsche Cayman has a flat 6 engine.
The 2011 Porsche Cayman has a flat 6 engine.