So this past weekend I successfully converted my front end to the m3 front end. After a previous weekend not realizing all the parts I needed to do in the first place. Anyways following kalim's swap here http://forum.e46fanatics.com/showpost.php?p=14272323 it was pretty easy along with Derek's help. The swap was very similar to Kalim's. Needed was tierods, spindles, calipers, and rotors. It really gave the front of the car a wider track. From http://www.bmwpkod.com/Media/Default..._fastfacts.pdf states that the track of a standard 330i is front/rear 57.9/58.4 and the m3 is 59.4/60. In all it added a whole 1.5 inches to the front end and really makes it flush.
http://img.tapatalk.com/d/14/05/26/bynajy6e.jpg
http://img.tapatalk.com/d/14/05/26/bemadu5e.jpg
http://img.tapatalk.com/d/14/05/26/arabepa5.jpg
Overall happy with the way the brakes and everything turned out. There is a pretty big difference with the braking force from the new setup. The only thing left is to go with the ZCP route.