A 65mm won't though...I have the APS 70 MM Cold Air Intake on my 04 Xt. I like it a lot, thought it might get kinda annoying, but quite the opposite. I don't even realize a difference in noise compared to the stock airbox until I get on it.
Obviously, this intake will require tuning.
High Flow Panel Filter= bestA 65mm won't though...
SRI = bad
CAI = good
That really depends. Thats still going to be restrictive if you are running a VF39 or bigger. The stock box with a good filter is a great option on a stock TD04.High Flow Panel Filter= best