I have a set on my 06. I got a tune from Bama on my SCT... couldn't have been an easier install.
A simple chiltons manual, IN.-LBS Torque Wrench, a torx bit and about an hour and the job is done.
If you don't know what your looking for, you'd never notice the new piece visually. Which, personally, adds some eye candy for you.
Otherwise, I noticed some good gains. Hope this helps!