Word, just finished installing it in my m3. Not a bad job for my first install i'd say. I kept the stock amp and speakers, for now. I do have to turn the player's wolume up quite a bit, so maybe an amp is not too far down the road. I tell ya, there ain't much room back there for all those damn wires! Luckily it seems all my solders held. I might post pics somewhere, sometime.

Dan