Are the tweeters available on the UK Jazz? The stereo is OK as it is, but I would have gone for any sort of upgrade if I had known it was available, as I do like quality sound in my car, as far as that is possible with OEM kit.
I have just bought an '09 shape UK 1.4 EX and there was no option for additional tweeters that I was aware of. Also, my USB port is in the centre console (with an adapter lead hanging from it) rather than in the glove box.