Just recieved my intake yesterday from ZR motorsports. Put it on in 50 mins or so, its not a race I like to take my time! It was very straight forward, and simplisitc to put on. The only main problems were not scratching the tube, putting the cone in the fenderwell, and the tight fitting TB silicone (good thing, but make sure you dont forget the hoseclamps). Very simple, easy and great looking modification. To me the ass meeter says its getting more power, with 144k original miles on the motor it seems to be a difference. I have a hill here in Butler on 422 that I go up and I pull 5 psi climbing it (its a good incline), and now im pulling 3 to get up the same hill (yes same mph speed). That and the lovely blower whine is now audiable. In conjunction with the upgraded exhaust (2.25 -3 - 2.5) it seems that the straw was opened up to allow it to breathe. Take a look:
ZR Intake Directory
ZR Intake Directory