thx for the compliments
No I dont have any sound clips yet. I have yet to record anything on it. I will try to get something of a sound clip soon.
The rear diffusor is mounted by 4 bolts. THe 2 that you see just below the license plate area and then there are two more connected where the lower crossbars below the engine . It is removable however if you remove it you can see where ther stock exhaust was. As far as the rear bumper goes off the top of my head I spent about 5k. That is parts, painted, and installed. That does not include the price for the highflow cats, headers and pipes to the muffler. Add about $2500 for those items. My shop guys said if it had been anyone off the street coming in to do this mod he would normally charge about 8k just for the muffler and bumper.