EuroSteve,

You will get much better base response from a quality set of aftermarket 6x9's. The factory ones are quite frankly, crap. My first upgrade was fitting the Type R's and it made a huge difference.

I also would not bother with sound deadening the back doors if you are not going to put speakers in them. If you want to do it well, do the front doors (both skins) and the back parcel shelf.

I am going to change the LOC because I have the dreaded 04 Euro buzz (seems to be a common problem, with plenty on this forum experiencing it). I am going to order a Pivot Raizin as well to try and beat this problem. I have been told by a good installer that the Sven or Navone are the best although a couple of guys on this forum (I have read) like the Alpine LOC's. The only problem with the Alpine LOC's is that they have no gain adjustment. Whether this is a must is debatable as my local Alpine dealer swears by them. I went with the Rockford because it had a remote turn on which was a mistake as it doesn't work as stated (not enough power to turn the amp on)

Let me know how you go. Once again, good luck!