Seemingly since the dawn of time, dropping in a direct-replacement K&N air filter (PN 33-2431; $52.95) has been a staple of early bolt-on modifications. Since the S197 era, cold-air intakes have become more popular than just replacing the filter. However, we wanted to see if there was merit in this easiest of additions. Here Lethal's Jared Rosen proves a parts guy can install parts! It turns out the K&N was worth a few ponies.