I picked up a 97 cosmos black m3 yesterday finally! ( thanks chi99limited )

few questions for the chicago area

anyone have the airbag reset tool?

best place to take the car for a complete detailing in the nw burbs? ( i live in buffalo grove )

looking to pick up a different head unit / amp / sub
abt is right by me but any other decent prices stereo shops besides best buy and circuit city?