20 to 25 gallons.
No, the Charger was built for many years in the late 60's early 70's the Challenger was built from 1970 to 1974. The Dukes of Hazzard was a Charger. Both models were recently rereleased by Dodge, the Charger is pretty but the Challenger follows more of the design of the origianl Challenger as the new Charger looks nothing really like the original Charger.
The 2009 Dodge Charger has 24 valves.
The 2006 Dodge Charger has 24 valves.
The 2010 Dodge Charger has 24 valves.
The 2008 Dodge Charger has 24 valves.
The 2013 Dodge Charger has 24 valves.
The 2012 Dodge Charger has 24 valves.
The 2007 Dodge Charger has 24 valves.
The 2011 Dodge Charger has 24 valves.
The 2014 Dodge Charger has 24 valves.
None, as Dodge didn't make a Charger in 2005