[Steenk]

Next week i am gonna pick up the hyundai i30 2013 gd, stationcar model. I know myself well enough, so soon modding will start. I am thinking about replacing the front door speakers for starters, a new tweeter in the upper corner of the door and mid/bass in the bottom.
Which size speaker? I have searched google alot to find those "speaker adapter rings" like i had to use on my volkswagen car projects.
Cannot find any at all! Its those plastic black rings, where you just drill out old speaker and put this instead so you can fit a standard 6.5" instead of some probably werid measure  standard speaker.

Anyone know where to get em ?

Best regards
Steen