I have a 2000 SAN that I bought last fall and want to upgrade the stock stereo system. I am thinking of keeping the Clarion Deck since I am happy with it, it has the external controls, and to just plain save money. I am thinking of adding an amp to power the 4 speakers, and maybe another to power a sub. I imagine that I will have to replace the speakers due to the increase in amps. Is all this possible while keeping the current deck? The speakers appear to be the smaller ones, so I imagine my options are limited. Any suggestions or recommendations that anyone may have would be appreciated! Thanks.