Save time, money, and headaches by purchasing a brand new set of brackets for your OBS LS Engine swap in one place! Kit Notes: -Reuses your factory R4 AC compressor -Reuses your factory power steering pump and pulley. Or power steering pump and pulley from a 99-2013 GM truck -Must use 99-2013 DR44 truck alternator -Must use 99-2013 truck water pump -Must use 99-2013 truck and crank pulley Kit Includes: -Billet AC Bracket for OEM R4 Compressor -Billet Power Steering and Alternator Bracket for OEM components -Color instructions for a quick and easy install -All Hardware needed for installation -6 Rib Idler Pulley Tensioner (Gates 38163), Belt (Gates K061037), AC Compressor, Water pump, Alternator, and Power Steering Pump NOT Included!.