Upgrade to Sound System

Need some opinions on upgrading my sound system. Have Stock Business radio and installed the Alpine 634 MP3/CD changer. Time for speaker upgrade. Wan thinking of changing out the door speakers to MB Quart QM218's and adding JL stealthboxes on the rear deck. Can Someone tell me if I can accomplish this and gain the upgrade in sound I am looking for by powering with a single amp? ...any recommendations? I am simply loloking for nice crisp sound, a little more bass punch - especially at normal listening levels. Thanks.

[diamondbimmer]

Someone please respond to this. This is exactly what I want! Not a lot of stuff...just a little more crispness & bass. I don't want to spend more than $500 or $600 also.

[excise]

Buy yourself some ads 5 1/4 inch speakers for the front doors, and 6 inchers for the rear deck. Takes a bit of craftsmanship to put 'em in, but is very doable. I used resin in the front doors to stabilize the speaker frames in the OEM holes and cut ou the old rear speaker frame (just the circular part) to fabricate a bracket so I could put 4-hole speakers into the 3-hole mount. ads speakers sound great and are way cheaper then MD quart. Good luck!