I met the guy that does the BOSS package for the 05+. He's a pretty sweet guy. What happened was I was cruisin on my way home and saw a Boss 06 drive by, and was like, "WTF?!?!" so I flipped a u-eey and followed him. But by God, that was an amazing car. Had the adjustable spoiler and all. He said the full package only ran about $6,000 to $8,000.
I've got his card if anyone's interested. I think he owns Heritage Customs (Home of the A.J. Foy Coyote Mustang) in Grand Prairie, Tx.
God I love Foose's paint jobs...