check this out homie since you stay in flagstff you should drive to the hood.all the homies like the sounds and its alot cheaper.they know what they are doing and for like 3-4 hundred bucks they will have you bumpin.if not then get some monster cables for wiring,get a good amp like an orion or kicker and for the sentra i would get like 4 10" kickers.also youll need some mids like some 5 1/2 or 6 " for the doors.run the power cable the red one from your battery to a fuse box to your amp.the black wire is the ground .just screw that to the frame of the vehicle.the blue wire is the remote.from the amp to the head unit.really easy and fun to hook it up.good luck