Great How-to. Using the old speaker as a mounting bracket for the new speaker worked out great. I installed Polk Audio db6750 6-3/4" Components with no problems.
Just one thing, I surface mounted the tweater because it looked like the tweeter diameter was too big for flush mount. But the door panel wouldn't go back on becase the tweeter was in th way. So I had to unmount the tweeter, reattach the door, and remount the tweeter.
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