Originally Posted by bustrblue2
thanks, any other info would be appreciated also, like if the boost can be turned up on stock internals, how much they estimate it can take before needing upgrading, etc.
Well with performance package 3 there is nothing really left of the stock internals. They bore out the cylinders to make it 3.8l instead of 3.2 and pretty much replace everything in the engine... that's why it costs 22 grand. They don't offer just the supercharger...