I have the Rugged Ridge Snorkel on my Jeep...
Granted I have the 3.8L Low Output but I figure the Install is the same for the 3.6, about 2 hrs and a six pack... Its Clean and doesn't really Interfere with visibility. Yes, I lost the ability to put a light on the Passenger side...but my wife doesn't like looking where I take the jeep anyways so no loss.
I did notice a small pick up off the line with acceleration. Nothing else though, so its not a real big performance mod.. Its never leaked water because I sealed the Holey Crap out of the connections, but to be honest I didn't get it for water crossing... I got it for cold air to help out my Hamster motor...
I like it because it goes through the cowl...not across the hood or down the front fender...
Just My opinion!