I have Z3's on my car, I was lucky to get them with sidemarker holes already drilled and a hole for the antenna. If you don't feel like drilling a hole in the fender for the antenna, I suggest you get one on the roof like a VW or stop listening all together (I don't really like the crap they play on the radio). I got an internal antenna a little while ago (my other one broke and I did't eel like taking the fender off to fix it) the internal ones are crap.
For sidemarkers, I don't remember where I got them, but they are known as (don't flame) Diamond cut Civic Style. I painted the border of the light with touch-up paint and it popped right in, got a 194 amber bulb in there and it works with my blinker.
good luck installing them. I remember when I did mine, those damn fenders have like 3.......million screws, nuts and plastic tabs holding them on

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