The reason for me that first comes to mind is first, the weight of it will be light, makes it easy to move in and out if need be; second, the flexibility in the types of boxes is a huge advantage over 12's, but since the trunk of a taurus could fit 5 fat guys in it I guess space doesn't matter too much. Also, why not catch people off guard after they hear your system when they ask what they have in your trunk and surprise them with two 8's!? Kinda the reason why I love my single 10", then again it's an RE Audio sub, so it's expected lol.Just out of sheer curiosity.. why would you go for two 8 inch woofers instead of one large subwoofer? One 12 inch subwoofer has more than twice the cone area of 8" woofer and will fit neatly in the trunk in a right type of box
Question, do you know what the difference is between the KX and ZX amp series? Spec-wise they look the same, but I've only used the ZX series before, but I don't think the KX is any different besides design.Get DVC 4ohm speakers, run coils in series and speakers in parallel. Get a KX500.1 to leave you some headroom.