hey,I have a full Harman Kardon sterio in my 97 328is and its awsome!!!
I have a tape deck in front with the staker in the back,I think thats the only downer I would kinda like a CD changer in the front? if you go HK its goin to be pretty exspensive no matter where you get it,I would suggest to put a really good alpine or blauplunct is that how you spel it? I did in my last bmw and it worked really well looked tha part to!!