[i30joe]

Wondering if anyone has tried or changed there radio antenna for a shark fin type antenna.

http://pages.ebay.com/link/?nav=item.view&id=141255992495&alt=web

Doesn't it need to be functioning or just a dummy? If functioning are they car specific?

[The Gonz]

There's at least one thread here where someone has done this. It looks quite small but I guess adequate. More importantly, the mounting appears to match the original spiral dipole, so a direct replacement is likely without any modification. Questions I would ask is whether the cable is long enough. For that price, is there really an amplifier built in?

[Phil №❶]

I wouldn't expect any decent performance from an aerial like that unless it was specifically matched to the head unit with an appropriate amplifier circuit. What's wrong with the current one 

[i30joe]

Nothing particularly I just like the shark fin look.