Okay, so I bought a mk4 astra the other day, 00 (w) reg. unfortunately it did not come with an aerial. I went to Halfords, and abused my staff discount to get all kinds of things for the car, including a new aerial. Unfortunately, it did not fit despite the packet saying 'Fits vauxhall and volkswagen cars'. Not put off, I took it back, and got a refund. I then went to the local scrap yard, in search of a mk4 astra with an aerial intact. I found what I was looking for and got the aerial for free! Unfortunately, it is the same size as the Halfords one, and consequently does not fit. It came off a mk4 astra, but an 02 plate version, is there a difference between the two, and can anyone advise me on what to do next?