The Moss Sprite/Midget Supercharger kit was intended to offer a safe increase in power when bolted to a stock engine.  Engines that have been upgraded by flowing the head and have accurate timing can benefit from an increase in boost. 

The kit includes a smaller pulley, extended alt./gen. bracket and instructions.

Measured boost at the intake will vary and depends on a lot of variables.  Our stock test engine developed 8 p.s.i. and an engine with flowed head developed 7 p.s.i.