I have a 200 mitsubishi diamante and I wonder if it can fit 6.5 speaker size for the doors.
different brand speakers have different size backs. you need to take the cover off your door. take out your current speaker and take it to a shop. if the new speaker is as thick as your current one , it will fit. if not, its going to collide with your window. as for screws not matching. a drill fixes it all , or washers :).
If all else fails, cut a hole in your door panel and install it there instead of in the door itself. Then you can put 6x9s in there. Some people say it doesn't look good but that's why speakers come with a fancy grill guard. If you cut the whole right, it still looks clean. There's nothing wrong with doing it that way.
