If you're looking for a much better upgrade, I've Vifa PL11 4" (premium line) made in Denmark or a PHD FB 4" made in Italy to offer you. If you want a freebie, I've 4" Phillips Sound Labs (PSL) that previously belongs to my dad that you can pick up from my office and I'll buy you a teh tarik if I have time. If I recalled, the 4" was what is left of a 3-way PSL set that was taken out from his Volvo rear deck when we sold the car. These are after market 3-way speakers 1" tweeters,4" mids, 8" midbass/woofer.