yeah people used to love AA, lately with dado saying shit about them they have lost some of their "glory" I would defintaly not buy a turbo kit from turbo-kits.com... but that is just my preference, i like products with abacking. If you know a lot about turbos you probably know its a lot more than just putting a kit on your car and away you go, if you are looking for relitively easy and lower price go with a supercharger, turbos cost more to get, maintain, install, tune etc... if i were to ever turbo an m3 motor i would look into spending around 20g to have it done.
David