A little Fat Mat around the speaker section of the back doors.

I re-used the factory speaker platforms in the back doors. The tweeters in the P165 speakers were almost too tall to use the platforms. I put Fat Mat on the doors, then put in the platforms. I flush trimmed the foam around the factory speaker, and used a razor to cut the rubber surround. A little trimming with the jig saw, and the factory speakers were gone and the platforms were ready for the new Fosgates.