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I've been reading of the issues with Hennessey on here, i'm really looking for an alternative. Do the Roush or Whipple kits include equivalent items to the Hennessey kit or would there be anything you'd recommend buying in addition to those kits? whats the real difference in the two packages?

I'm debating supercharging my 2011 6.2L raptor. The only thing I'm uncertain about is the best way to go about it. I've been looking at the Hennessey 600 package, but I don't know enough about what the other options are. I was hoping you guys could recommend a course of action do I send my...