I'm going to upgrade the suspension, exhaust and filters if i order the Z and while i understand the difference in the engine and what filter i will require i am unsure on the exhaust and suspension. 
  
I'm going for coilovers, if it states that it is 2003-2007 do you think that will fit the new 2007?  Also same question for the exhaust. 
  
Also does anyone have any experience with de-cat on the Z?