Bosectomy Miata NB Speaker Adaptor Plate

I needed this adaptor plate to replace the obsolete OEM 8" Bose speaker with a new 6.5" Kenwood speaker in my 2001 NB Miata. Just put this plate in place of the original speaker and then mount your new speaker to it. I have not tried it in a NA but I assume it should work for anyone replacing a 8" Bose speaker with a new 6.5" speaker with a 4-screw pattern

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