who has some long tube headers for a s197 that are not lower than factory pipes (scrubbing) how hard was the install and what kind of gains has any one gotten from a dyno.  thanks for some ideas
07 GT   4.6L 3 v CAI and tune  

The fit on mine is great and were pretty simple to install. Power gains were non existant. Look at the question I wrote about why I lost so much power installing them. Even after a recent chassis dyno tune I was still down 15hp and 15lbs torque.  

thanks for answering I guess everyone is shy on this subject.