The 2.8, 3.6, 3.6, 4.2, & 4.7LC rear inlet twin screw supercharger line up develops 650- 1400HP with ONE basic kit. Just upgrade the supercharger all the way up to a monster 4.7L with 168mm 2350cfm throttle body. Unlike all those other kits which are based on the same lower cost and smaller 2.3s with more restrictive and limited inlet systems, these are BIG distinctive, powerful and highly efficient superchargers with matching kit components. Ideal for the larger displacement/ higher HP 6.1-7.0L 2V Fords. Since the Mammoth kit components are over engineered for minimum inlet restriction – the key to positive displacement supercharger HO- they also make HP – they also make more HP at lower boost/ HP levels. No cobbling together in expensive parts in an attempt to match the Mammoth Kit airflow. Just add a KB throttle body. Superchargers are easily upgraded in 20 minutes as “all fits one”. Then there’s the Patened LC (Liquid Cooled) advantage.