2000 Coupe EX Rear Deck and Speakers

[CoLT40FiiVe]

I plan on replacing my rear speakers and want to dampen the vibrations in my rear deck on my 2000 Civic Coupe EX, so two questions:

1) How do I disassemble the rear deck so I can put damping materials on the inside (under the plastic) if possible, and whats the most cost effective damper?

2) Im interested in some Kicker speakers:
http://www.crutchfield.com/p_206KS69/Kicker-KS69.html

or since I've read that circular speakers sound better than 6x9's, and I plan on getting a sub...
http://www.crutchfield.com/p_206DS60/Kicker-DS60.html
and
http://www.crutchfield.com/p_142SA69/Universal-6-x9-to-5-1-4-or-6-1-2-Brackets.html

I'd like to know if the second option will fit properly without too much modification.

 

[will85w4]

I've always done my rear speaker work through the trunk. I also have a 4dr, but I would assume that it's a similar setup.