You don't need to swap out your headlight assembly, you already have projection headlights. Don't know about the XB bulbs but I've seen the regular 35W 5000K in real life and they look excellent. Very white light, I mean OEM is 4300 and these are very close. Free shipping too? nice. Like I said when I get around to it I'm getting the same for my 6 as I have the Touring in that one but for the CX-5 I picked up the Tech package mainly for the factory HID and they really are worth it. Good luck man, post pics after the install! our cars have excellent cutoffs in the projectors so no need to worry about blinding oncoming traffic either.