I think Volant is one of the best for the v8. Whatever you do, you'll want a dry filter, most come with an oiled filter (may have to buy this separate). I personally don't think they're worth the $$. The OEM intake is a true cold air intake, it pulls cold air from the fender. Every aftermarket "CAI" that I'm aware of, pulls hot air from the engine, thus it's technically not a CAI. Benefits are going to be negligible in performance/mpg increase. I chose to just do an AFE pro-dry filter in the stock intake. I'm not gonna say it made a huge difference, but it seems to run smoother and pull a little better in the mid-upper rpm range. MPG, mine varies too much to say for certain that there was any change.