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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I'd just drop in a K&N in the stock air box. You won't gain much more by spending another $300. Plus the dealer will try to void any warranty work if it comes down to a blown motor. I just dropped in one and it works great. No worries about sucking up water or worrying about the idiotic service manager crying warranty void for something silly. I'd put the $300 to a programmer.
I agree with Dogg (imagine that ), I would do the drop-in filter and a Airaid MIT pipe. Much less money for the same gain.
$300 for 8hp is not a good deal!!!