deadening for SPL

Well, I finally went all out:  I am now running 2 13W7s off of 2 1000/1s in the trunk of a 94 Accord.  Needless to say, I need to do something because my trunk lid has a one-way xmax of an inch.  Everything on my car is flexing.  I know that this is wayyyy overkill for bass, but I have to say I love to show people up.  I am mainly looking for maximum SPL, which would ideally remove all resonating panels.  I have a feeling this wont be possible, and I really dont want to put a lot of money into the car because I usually only have a car for about a year(plus no resale value for dynamat).  I am open to any and all ideas, especially if they will save me some money.  I do not, however, want to waste money on something that will not work.  As far as blowing the hell out of the car, that doesnt bother me a bit(its just a car).  Rattling is not a huge concern, I dont turn it up to that extreme unless provoked by someone trying to bump or show off.

I have been looking through several posts about sound deadening and have come up with this basic summary of options:

Dynamat:  Great reviews, can get for $3.60/sq ft + tax at local dealer

Brown Bread:  Great reviews, moderately expensive, no longer available @ b-quiet.com?

RaamMat:  Great Reviews?  $1.60/sq ft + ship on eBay

Peel n Seal:  Good reviews(I could use extra 3M adhesive if needed) havent checked price or source

rubberized undercoating:  would this be any good for SPL purposes?  walmart?

Any and all comments, questions, suggestions are welcomed and I look forward to any input given.

O.K. I"ll tell you all the best secret around for killing all rattles. I've made great money doing it and have had great comments.

First strip your trunk of every thing you can.  Next remove trunk lid. Spray everything down with 2 coats of Westley's rubberized spray undercoating, Next get The Great Stuff Triple Expanding Foam insallation and fill up every hole and creavace you can find. Make sure to get real good in the middle of the trunk lid. Last buy some self stick foam for truck caps and put it around the edge of the trucnk lid to make a really tight fit.

You can get the Westley's (7$/can) and Pep Boys and the insallation ($2.50/can) and foam ($5/3 yards) at Meijer's.

I have a neon which (rattle horribly) and did the same thing not one rattle or buzz. Cleaned up the sound and kicked up the bass.  I spent maybe $35 and 2 hours doing it. Compared to $150 for a Dynomat trunk kit .

Did the same thing to a 01 Mustang for $150 and a 98 Explorer full truck for $500. I made $115 from the stang and $400 from the expo.

Oh one more thing if you don't want to go through all the trouble doing that J C Whittney sells some good deadening pads. Twice as thing as dynomat, 4 - 1.5 x 1.5 self adhesive sheets for $35.

If your really noisey go with both like ^ said.

EDEAD www.elementaldesigns.com $1/sq foot 45mil, $1.50/sq ft 70mil

Heard great things, that's what I'm picking up.

I am also looking at buying deadening. I have a hatchback, and was wondering how many layers a hatch usually needs. I think i read somewhere that 2 is normal. Also how does eDead v1 se compare to Dynamat Extreme?