Supercharging your 6.1L or stroker motor? At HHP we install these high quality intake gaskets on all of our blown SRT-8's to prevent vacuum/boost leaks around the intake to head surface. The OEM intake gaskets are decent but due to thin walls between the oil fill and #1 & #3 intake runners the only way to almost guarantee the think oem intake gasket will not leak at this location is to fortify it with a gasket like this.