Rear: Polk 602a 6.5" Coaxials ($-from old car; 15 mins. to install)
This was the easiest part of the whole speaker upgrade. I cut off the plastic nubs sticking out and in it went. I decide to use #8 - .75" screws instead as this prevents the screws from hitting the 2 cross beams in the door. (Bloody factory screws are ridculously long). They do a decent job as rear fill.
Front: CDT Audio Classic CL-61 2002 ($130; 2 hours)
I got these 2002 models from
www.mainstreet-audio.com for $130 only and free shipping. (Thanks eMass). I think they are the speakers to beat for the price. It cleared up the whole midrange and female vocals have presence they lacked with the OEMs. The midbass thumps well too

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The installation is a bitch since I think I have found the upper end of what one can fit in the Element. The mounting specs are 5 11/16" diameter and 2 7/8" depth! I had to totally cut out the rear plastic cup but it still does NOT sit flush as the basket is larger then the 5 1/4" opening. It sits about 1/4" above the door panel and the speaker terminals bump the lower metal cross beam. I mounted it with the terminals on top and the speaker grill panel will fit back on barely. I had to remove the foam on the speaker grill panel and the lower front corner does not sit flush (about a 1/8" off but totally unnoticeable). I think I will borrow my buddy's Dremel and enlarge the speaker opening so it sits flush over the weekend.
Addendum: I finally got around to cutting out and enlarging the speaker opening. I took a rotary tool and cut 1/8" around the entire perimeter of the opening and the basket can then be removed. I reinstall the speaker with XTC foam baffle inserts. The speaker grill now sits flush and the speakers now sounds tighter than before.
I also ran two 16 gauge wires to the speaker opening so I would not have to cut the factory wiring. If you want to do this I would recommend using 18 gauge wires instead since 16 was very tight. The crossovers were secured underneath the dash on either side with 2 wire-ties.
The tweeters were a breeze once I figured out which mounting bracket to use. CDT ships 1" tweeters with flush and angled suface mount. I used the angled surface mount and 2 layers of double stick tape. I stuck this on a sheet metal bracket I made much like what Element-J did. This made a wonderful fit and the tweeters are aimed higher then before.