Hi all, Basically I am about to replace the speakers on my A4 B6 Cabriolet, but I would like to get a few things confirmed before I go and spend all that money. This is what I gathered from the internet. - Front and rear speakers are 6.5" (165mm) - Tweeters are 1" (25mm) - Crossovers are in the doorcards Now my questions are... - Are the above correct? - What is the maximum depth of front speakers can I fit? Or do I need an MDF ring to pad it out? - What is the maximum size of crossovers can I fit without modding? The headunit is a standard RNS-E, and speakers are not Bose, by the way. Thanks.