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i remember seeing a post where someone did this...
i need to know if there is a big diference if i use 1/2" or 3/4" plywood, also, he cut the floor across after where his box was and put hinges so he could get under the floor easily, anyone remember seeing this? or has anyone done this? i just dont want the box movin around and i dont want the floor to sag after time...

 
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i replaced mine with MDF (man is it heavy!) i think mo used ply. much lighter, and even stiffer. I have bought 1/2 inch ply for a box I am building, and if press board is what most cars come with stock, then 1/2 will be more than enough for you. 3/4 will be stiffer and heavier, but its not like you are installing a working jackhammer on it, right? [IMG]i/expressions/face-icon-small-wink.gif[/IMG]

in yoru position, id run 1/2

 
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If it's not for an enclosure, 1/2" MDF with a cross brace underneath.

 
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cool, so 1/2" ply it is!
thanks guys, now all i need are suggestions on what to do with the cargo net tie-downs that are attached to the metal trunk floor...
are the screwed in or snapped in?

 
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They are screwed in....i know because i used one of them for my ground for my system [IMG]i/expressions/face-icon-small-tongue.gif[/IMG]

 
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MDF = Medium Density Fiberboard

IMO, plywood could buzz with the subs if it's the cheap variety. [IMG]i/expressions/face-icon-small-sad.gif[/IMG]

 
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marine grade birch ply, or furniture grade. best to use for finishing work of any kind. also stiffer than MDF at a fraction of the weight.

 
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any suggestions on unscrewing them? just use vice grips or something?