I have a '06 RX8 with the factory Bose system. I am going to use the custom box that Zenclosures makes for the car( can be found on ebay motors). I want one 12", thinking about kappa perfect, alpine X, or digital dynamics. Dont know about amp, partly cause of this: I read that due to the kind of signal coming from the HU you have to use a Line output converter if you want to tap in before the bose amp (cant tap in after the bose amp cause its heavily EQ'd) I've also heard that with the right amp/inputs you dont have to do this LOC.. yet others still say ppl have fried their HU's not using one??