radio upgrade
 

Hello everyone,
I am looking at an 05 S40 T5 AWD. It has everything I want in a car except it has the base stereo and I was really hoping to get one with the premium system. I have a couple of questions. How good is the base stereo. Obviously I plan on listening to it but have people had any issues with it? Is it possible for the dealer to upgrade the stereo? It may be a factory only option but if the dealer can do it, then sometime I could always do this. Lastly, the dealer is telling me that the T5 AWD is very hard to find and they don't know when they might get/find another one. Is this just the dealer trying to push the car they have or are they really that hard to get? Thanks in advance.