I have a 93 ls 400 with that nakamishi (spelling off probably) sound. My 2 front speakers by the drivers leg and passanger leg have gone out. One day listening to them fine when one went almost silent. I could still hear the music so I thought I blew a fuse or something, checked and no fuse blown. A few days later the other one did the same, I called lexus and they said there done. I have to replace them and was wondering if I should replace all 4 speakers excluding those small ones unless I have to. What size speakers should I get? And I dont think my car came with a sub, if so where would I find it?