Just got my IRS subframe bushings, control arm bushings and differential bushings installed. I also had the shop weld in an O2 sensor bung to my Magnaflow X-pipe w/cats and install it. I then put on the Steeda CAI, BilletFlow differential brace and Magnaflow cat-back. WOW, this car sounds great and handles much better than it use to. I no longer have the clunk which I am assuming is because of the 14 mm bolts that are in there now. Have not experienced any hop but I did notice the tires break loose a lot more easily so I know I gained some power with the exhaust and CAI. Next step is to install a wide-band and a few other gauges along with some subframe connectors. I'm very happy with the results so far and think they were well worth it. :thumbsup: Get a few more miles on the combo then off to the dyno to see where I am.