I just installed front 6.5" Infinity 6000cs components and rear 4" Infinity 4002i -
I Dynamat the speaker area only, instead of the whole door. I also installed spacers for the front. The rear speakers' tweeter touches the door trim - but i don't think it's a big deal.
Tweaked the Kenwood HU and what a difference. I like it a lot. I can't wait to see how it will sound with (2) 10" in the trunk.
Also, I got a great deal on the Infinity speakers from BLKWRX03 - $175 for the whole setup including spacers Thanks dude!
Here are some pics of the install...