I got my new Xtrail CVT 4x2 and it only comes with 4 speakers against the 6 speakers of the 4x4 unit. Where and what brand is good to add the 2 tweeters at the front? Sayang kasi yun speaker space sa harap. The stock speakers are good enough for me in the meantime so I just want to make it a 6 speaker setup. I'm planning to ask the casa if they sell tweeters but there might be better and cheaper alternatives elsewhere.