If anyone's thinking of replacing their stock horn, today I installed a Stebel Nautilus air horn.
The compact model will fit right into the same space as the OEM horns. Install was simple after drilling a new hole in the OEM mounting bracket to accommodate the Stebel. If you do it make sure you install the relay which should be included from the vendor.
It sounds great, much louder than stock with a high, two-tone air horn sound.

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2002 TDI New Beetle GLS 5 speed, RC Stage III, Sprint 520's, VR6 clutch, boost valve, Panzer skid plate, .681 5th gear, ventectomy, HK Drive+Play, Shine Real Street Suspension, Escort 9500i, Stebel air horn, cool alien dash guy.

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