Holley's engineers have designed what's probably the most compact accessory drive system for GM's LS and LT engines on the market today. The heart of the system is a water pump they design and cast. All the engine accessories mount to the water pump, keeping the components close in to the engine. All the accessories are included in the kit: a Sanden A/C compressor, Type II power steering pump, LT1-style alternator, tensioner, and an SFI-approved balancer and crank pulley. Two different heater hose locations are possible, and the kit comes with a new serpentine belt and fasteners. Retail pricing starts at about $1,900, but it's currently on sale for a limited time.