Getting the speaker wire through is actually quite easy haha, I just used a stiff wire and sent it through then tied speaker wire to the back of it and ran it through with that. I dont have back doors though...so running my wire to the back speakers was real easy...so I cant say about the back doors, but I imagine the same theory would work. Yeah, 6.5's fit perfectly in the back. Are you sure thats an amp on those speakers in the door btw? and not a crossover? I wasnt aware that the dodges had amped speakers except h/u power...but I also didnt have premium sound in mine. oh and if you did get new speakers and have those tweeters I hope you didnt get a coaxial set because then if you run through that crossover to your new front speakers it will try to put mid range sound through the tweeter on your coaxial, I would hope that you replaced both tweeter and mid range with a component set though...but after hearing that you went through circuit city I dont even know if they sell components...