The BOSE link made for very informative reading. Thanks so much for that.
The only thing is, does the standard car speakers as Chris describe, some with the same speakers as the BOSE system? I wouldn't have thought so.
either way Chris, you better be sure of the speakers before doing anything. Otherwise you could buy a new set of better quality split-system speaker that would fit the alfa, and that way, not only will you improve the sound, but at least you aill be able match the Amp, to the speakers exactly.