Seller notes

3rd Millennium AD1 Installation Adapter Kit. Required to mount our M600 or M800 speakers into a 1999-2015 Miata. Includes mounting adapter rings for both doors, gasketing tape, mounting screws, and detailed instructions. If you're using these with your own speakers, the inner opening is approximately 5.4" Please note that if you are purchasing our M800 speakers, we have packages in our eBay store that include both the speakers and the AD1 adapter at a discount over purchasing the pieces separate...

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