I've modified my 4.2L pretty extensively, and for the most part I'm happy with the mods. The Diablo chip is awesome! You've got to use premium gas, but the power and responsiveness is great! I've got a single flowmaster into dual exhaust, which sounds great, but didn't do my gas mileage any favors. My question regards the K&N filter: Does anyone know of a filtercharger system for the 4.2L? I've got the standard, drop-in K&N filter, but I think the filtercharger would give me a little more grunt. Anyone know how to build one if they don't make them?

Thanks,