I would just like to let everyone know that I just built and installed my new cai yesterday and I highly recommend it to everyone!!! My car sounds great now and the power gain is incredible! It only cost me alittle over one hundred dollars and I'm convinced that I have a better intake than AEM could ever offer. Anyone who is interested should read up on SuferX's article on building your own cai. And btw, in the article, it says he'll update it on what to do for a GS-R (which is what I have), but if you have a GS-R, just go with the 2.5' piping that he recommends and even though the throttle body is a bit different from that of the ITR and LS, you'll still be able to make cuts so that it'll fit. once again, if you don't already have cai, this is very cheap and the results are amazing!