how to install sub & amp on is250/is350 #SimpleSickBuilds - YouTube
How to install a Subwoofer in a lexus IS250/ IS350 - ClubLexus - Lexus Forum Discussion
More boom for the Lexus ISF! OEM Subwoofer upgrade & relocation Lexus IS250 IS350 ISF | Lexus, subwoofer, original equipment manufacturer | Freddy upgrades and relocates the OEM subwoofer in the Lexus