Hello, recently a tree branch fell and hit my roof and cracked my antenna. The antenna still work fine, it's just the outside that got cracked. I look it up online and its $300 for a brand new one. So i just want to ask if all the new audi antenna are the same. Cause i saw some used a4 and a6 antenna on ebay for $70. Just make sure that it will fit before i buy it. Thank you guys