Brothers now offers a multi-stage, automotive insulation and sound damping system to give older Trucks the in.quiet riding comfort in. found in today's new vehicles coming off automotive assembly lines. Brothers in.Deluxe Sound Deadener Kits are designed on current state-of-the-art auto acoustic technology, to insulate and control the noise, vibration and heat in the passenger cabin. These kits are pre-cut and ready-to-install in a couple of hours.