  
The VR spacer has small ridges that help straighten airflow, also reducing air turbulence and increasing velocity.
The power gains we have seen are throughout the curve. The LS-2 applications see around 5+rear wheel hp and 10+ftlbs of Torque!
Fits all GM LS2 Motors: Chevy SSR, Chevy Corvette C6, Pontiac GTO
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