Big Block Chevrolet Long Water Pump AC brackets - Tall mounts - These are for applications where there is vertical room, but not horizontal room for mounting the Air Conditioner compressor and alternator. 116R - This bracket mounts the AC compressor above the engine.   This bracket is especially nice because it includes its own idler assembly.   Use with 216L.  dimensions buy 116L -  Like the 116R, but for driver side mount.   This position allows the use of factory alternator and mount.  dimensions buy Wide mounts - These are for applications like Corvettes and Camaros where the engine envelope is very low.  Trucks can also benefit from these as the truck engine is mounted high for ground clearance. 122R - This bracket mounts the AC compressor about valve cover height for maximum hood clearance.  Trucks and older cars with a wide engine compartment can benefit from this configuration.  dimensions buy 122L -  If you want to keep your factory alternator and power steering pump this bracket may be the answer.  dimensions buy Alternator brackets - Tall mounts - These are for applications where there is vertical room, but not horizontal room for mounting the Air Conditioner compressor and alternator. 216L - This bracket mounts the alternator to the driver's side of the engine.  Use with 116R.  dimensions buy Wide mounts - These are for applications like Corvettes and Camaros where the engine envelope is very low.  Trucks can also benefit from these as a truck engine is mounted high for ground clearance. 222L - This This bracket mounts the alternator to the driver's side of the engine, but much lower than the 216L Use with 122R.  dimensions buy Low mounts - These mounts place the alternator centerline below the water pump centerline.  216L - Bracket mounts the alternator low on the driver's side near crank damper level.  This mounting is good for narrow frame rail applications. dimensions buy 225R - Bracket mounts the alternator on the passenger side near water pump level.  This is an alternative for how hood applications. dimensions buy