I want to change the speakers in my holyday car. It is bought in Italy (don't think it matters). Last time I drove it (december 2009) I didn't like the sound in it and I want to go on holiday again now and to buy the speakers from the UK and just install them when I get there, but I don't know what the speakers sizes are. I want to change all of them (don't know how many are there). It is a 5 door, 2002, V-tech model. Thanks