This New A/C Compressor Mounting Bracket Allows you to Use Your Factory NON-A/C Pulleys and Your Factory NON-A/C Alternator Mounting Brackets. When using this A/C Bracket, you Can Not Use a Mechanical Fuel Pump, you Must Use an Electric Fuel Pump. This NEW A/C Compressor Mounting Bracket Kit Will Work On B/RB/Crate Hemi Engines without Mechanical Fuel Pump and Aluminum or Cast Iron Water Pump Housings with Drivers Side Lower Radiator Hose Inlet.