kbreitwieser you're right about crutchfield. they're worthless. only thing they're good for is wiring harnesses. anyway, i've got a 95 pathy, and i used 4x6's in the front and 5x7's in the back. Be warned about the info from manufacturers though. I bought the kicker 46 and kicker 57 for my car (which they said would fit). i needed ALOT of modifications to make them fit properly. first of all, the rear speakers have a metal dome on the top that's fitted for the factory speakers. mine did not fit very well, so i had to cut off some of the roofing material to make it fit and screw in properly. as for the front, Nissan once again made a custom molding for their factory speaker. the 4x6's that i got would fall through their hole. i ended up having to get some plywood, cut out the same pattern, and mount my new speakers to the plywood. you could probably fit 5x7's in the front, but once again it'll be some more custom work. i was able to mount an alpine 6 cd changer in the glove compartment relatively easy compared to the speakers. anyway, my system sounds pretty good now, but i'm just waiting for another free weekend to put my bass tube in the car.