I am going to put my aftermarket stereo in my 2003 SE and add some sound deadner. I am going to replace the stock Bose Sub with a 10" freeair sub (I like my trunk space). I was planning on put sound deadner on the rear deck and the front doors. Any other areas that make a big difference? How much will I need to do the rear deck and front doors (1 Layer)? I will probably use second Skin.

 

With going rear deck (and of course blocking off any holes) and doors, IMO you've already covered the two best bang for your buck places. Other than that, I'd wait till it's in, play test tones between 25-100 hz, hen find and deaden any rattles you hear after that....

 

I would also put some on the trunk lid.

I actually almost finished my trunk this weekend on my 02, just have the bottom area of the spare tire to go. My hands are not happy right now . I got that stuff into every little area that I could get my hands into.

 

Doors, IMHO. Not easy, but can make a BIG difference if done well.

 

6 to 8 sqft. per front door
8 to 10 sqft. for the rear deck

 

+1 to rear deck.