Hello,i have the 2001 audi a3 8L and i found BOSE sound system from 2005 audi a3 8P 3,2 quattro....MY question is will this system fit on my 8L,talking about the subwoofer,amplifier and speakers,and cd changer? ALSO is 120 EU a good price for all these stuff? Thanks in advance.I was looiking in the internet and i found difference between 8L and 8P BOSE subwoofer.This is my main concern,i guess the 4 speakers will fit,but what about the subwoofer and amplifier and changer?