I believe they are a straight bolt on fit to the Air Flow Metres. The would act the same as a pod filter setup as the sponge filters are exposed. (Unless you keep the stock air intake, feeding air to the ARC Airbox) Power gain won't make a huge difference. You might get a slightly louder induction noise due to the sponge filters being exposed. You're are better off sticking to the stock GTR Airbox, as they can handle over 300+ kW's.