Metra is the industry standard for vehicle-specific installation hardware, and Audio Express Inc in Longview, Washington relies on their dash kits, wiring harnesses, and antenna adapters in a significant portion of the installs we do. Installing a new head unit correctly in a modern vehicle requires adapters that fit the vehicle precisely and retain factory features like steering wheel controls and factory amplifier signals. Metra makes those adapters for a wider range of vehicles than almost any other company. Their products are how we make sure your new stereo fits cleanly and works the way it should from day one.