FYI to those who never installed 6.5" door speakers for the BASE 370Z.
When you pull the door panel off, you'll see an oval base with a 6.5" speaker attached to it. You may find yourself scratching you head when the magnet hits the metal beam inside the door when attaching the new speaker to the oval base.
I wasn't clear about other DIYs in regards to spacers and faintly read somewhere this suggestion:
Cut out the OEM speaker and use the frame as a spacer for the 6.5" speaker before attaching it to the oval base.
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