Chrysler Big Block Air Conditioning Bracket (383, 400, 426, 440) Designed to mount Sanden AC compressor on Chryser Big Block Engines (383, 400, 426 adn 440) Designed for V-belt set-up and allows you to retain your 2 groove crank pulley without having to purchase a 3 groove crank pulley. ---CNC Machined from 6061-T6 Billet Aluminum ---MADE IN USA ---All Hardware Included Designed for Sanden 508 Style compressor and compatible with CVF Racing alternator and power steering brackets. Also sold as a complete system under part number 440-AC-SYSTEM or 383-AC-SYSTEM. AC Compressor Sold Separately.