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.