The difference is in the engine 330 is bigger than 350'
The 2013 Lexus IS-350 has a V6 engine.
The 2010 Lexus IS-350 has 24 valves.
The 2011 Lexus IS-350 has 24 valves.
The 2012 Lexus IS-350 has a V6 engine.
The 2011 Lexus IS-350 has a V6 engine.
The 2009 Lexus IS-350 has 24 valves.
The 2014 Lexus IS-350 has 24 valves.
The 2010 Lexus IS-350 has a V6 engine.
The 2007 Lexus IS-350 has 24 valves.
The 2008 Lexus IS-350 has 24 valves.
The 2007 Lexus IS-350 has a V6 engine.
The 2013 Lexus IS-350 has 24 valves.