Well i guess its not really the speaker but its the whole piece that goes around it and what not. When i get a song with a lot of bass it rattles up against the glass making it sound like ****. Any suggestions?

Moved to Audio.

Foam strip around the edge between the deck and the window? Or maybe secure the deck a little better?

Yea I am just trying to gather ideas it still to damn cold here to do anything in the garage even.

This is a very annoying problem that happens in tons of cars, the foam strip works, but looks bad if you can not tuck it out of view (from both sides, the windshield and the interior) Trying to secure it better and have a better wedge between the glass and the rear deck sometimes is the most effective and easiest to do...If you do the foam strip it may be easier to actually take out the rear deck carpet panel and then get some adhesive foam strips and then attach it to the glass out of sight...I have found that in some cases it is also the carpeted panel itself bounces up and down off of the frame and metal of the rear deck, so sometimes it helps to put something between them to help dampen the rattle from bouncing up and down.