Rumors has it that it bolts right on!!! An 04 a4 front end can be replace with an 06 a4 to give it a newer and that awesome audi grill but I've only seen it on three cars and no info was giving to me on how it was done...does it need mod or bolts right on! I join the forum to find out what's the deal with that rumor!? If anyone knows I'll appreciated for more info!! I got a salvage audi a4 04 that's missing the front end so if I can put the newer front end why not I'll say! Thank you for reading