here is an punt

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Flat sides are best on a bored out vmax. Hard to tune right on a stock engine.

Stage 7 is a better choice for a stock engine. Still will need some fine tuning, but once set up right, engine will run great.

Either system needs a full aftermarket exhaust system.

Another option is Sean Morley's jet kit setup.

Mike
 
i am runing a full kerker system i was just wondering doing my research i like the numbers from the morley kit but i also like the number from the dyno stage 7 with vboost still on i also like the added room the stage 7 gives you
 
There is added room with the stage 7 but you lose midrange and low end when compared to our kit.
 
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