I had my friend install my 2 JLAudio W0's with a Kenwood 350 watt amp in my 1995 GXE and it sounds sweet. I got it for $160 from my brother(including all the wires and all). I havnt been around many 'systems' but for what i got it for its a sweet package. I built my own box; it looks kinda ghetto but it works well with the subs and all. Anyone recently setup a system in their altima? if so what componets do you have in it?