1.8t 2.7t
Ditto that - there are a few S4 parts I'm after too. If the writeup is out there, great but if not it'd be a welcome addition to the forum. There's really not going to be much to it beyond transferring a huge number of parts. You're exchanging two engines that both were available in that chassis, so it should be straightforward - the biggest thing is the labor involved. Props for taking on the job and definitely take a lot of pics and notes.
stock s4 headlights are about as good as b5 headlights get. light output and beam pattern are great. they'll fit on an a4, if your a4 is prefacelift (two piece headlights), you'll need to cut the fenders and swap connectors.



