I've got a pair of 6.5" Alpines I pulled out of a previous car. Actually was able to mount them in that one ('02 Maxima) in the factory location but I did have to do some trimming. Hopefully I can do the same with the front speakers in my '04 Accord. I've got the factory nav so I really don't want to yank all that out for a new HU but the speakers definitely could use an upgrade.
2004 Honda Accord EX V6. Mine is shinier than yours.
2004 Infiniti G35 6MT. Also super shiny.