I don't have an upgraded horn in my 370z, but use Hella Dual tone in my 240Z's. It makes them sound like Volvos.
I do have a "Honk if You're Horny" bumper sticker on the 370 though.
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Koni|Swift|Michelin|Motordyne|Berk|RJM Performance|Gates|SPL|Motul|Technafit|Ate Super Blue|Hawk
Tommy Kaira|Momo|Optima|Hella|Hotchkis|Red Line|ZSpeed|Stillen|B&M|H&R
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