You're not going to get any real gains from an intake (maybe a few hp tops), just a bunch of noise. Buy an AC/Delco replacement paper air filter and replace it when needed. Aftermarket air filters, K&N and the like, get their claimed performance gains by not filtering as well. I put a K&N on my old 02 and the next oil change the oil analysis said I needed to change my air filter. Don't fall for the hype. You're better off spending that money on a good tune.