I used to have regular old 6.5's in my car and they didn't fit properly. They rattled and moved around a lot. I finally wound up caulking them. Last winter I went to 6.5S's and it fit a lot better. Unfortunately, the speakers don't sound as good... but that's a whole different issueBrad67 said:I have a question about speaker size in a b14 200sx.. I know the speakers are supposed to 6 3/4 (6.5S) but I was wondering if a regular 6.5 would fit..