  == 2003-2004 Cobra is not an aluminum block, it's cast iron. ==  Hey, I'm new to this whole wikipedia thing, I just created the account actually, but I noticed that the article was wrong in stating that the 2003-04 Mustang Cobra (aka Terminator) uses the aluminum DOHC. They actually put a cast iron in to handle the extra power that was added from the supercharger. Someone who is more familiar with the system can change that.