Craig..........Another thing to watch is.......The Edelbrock kit that I ordered, was the one they told me to get.........when I was finished and ASSC tuned it he discovered that even though the kit was ordered for a 2006 GTO LS2 and ECM......the TMAP sensor was a 2 1/2 Bar unit and the GTO ECM was calibrated for a 1 Bar sensor.........Took a while to figure that out.....and also he had to decrease sensitivity of the knock sensors by 20% to keep the Timing in the engine.........Just Say'in !!!.........