just to share, another basic and free upgrade which i thot was good :
the E46 front top absorber mounts locating pins can be easily knocked out and the front camber adjusted negative. the absorber mount is under the tower so all you should see is the 3 X 13m bolt and a fat locater pin from the top. i managed to get about -1.8deg by just knocking it out and pushing the top towards the engine.