Just checking out my updated parts lookup and I see the 5.4l s/c listed for after build date 02/02/09! Also, I see a new air cleaner assembly using the cold air intake type setup found on the GT! Just thought I'd let you guys know!

 

540hp gt500 =)

 

New intake might increase that by a couple HP. I wouldn't be surprised to see 550 or so.

 

525hp maybe?