im gonna make new side panels in the back, on one side i will mount amps to it, so it will have to be kind of strongthe other side will be a tool bax storage chest thingy
i was thinking 1/2 would be ok,

try using like alum panels

so, are you wanting to make panels, or storage boxes?

im either gonna do alum checker plate on top of the original black paper (cardbaord like crap) of just stainless steel

I used 1/4 plywood. I thought it insulated against sound better, easy to cut and work with. It covers easy with carpet, or other cloth material.
And it's cheap.

This will give you some ideas.
http://www.geocities.com/pickup7879bronco/CustomBroncoPanels.html

one side will be a panel, the other side will have a allready built sub box attached to the side of the truck, and the shape of the box will conitnue down the side and be a storage area. so it looks like a flush box and hidden storage. the back seat wont be in, so it wont get in the way.

i dont want it too be too heavy, but i want it to be strong and light

ya those are pretty sweet. i like it, might have to take some ideas

if i dont make that a stroage on the side, im gonna make a false bootm behind the seats

Okay ya'll, once again I will show my ignorance...what is MDF and would it make good panels or is it too heavy?

MDF = Medium Density Fiber - ideal for speaker boxes, and used as a top layer for formica when building countertops. It's not bad to use, but it can split, if you don't pre-drill your screw holes. Also, use wood glue.

Since I'm guessing you haven't used MDF before, be forwarned, it is dusty when it's cut, so I fully recommend a face mask when you cut it

I saw one guy make the whole side panels out of diamond plate. It looked pretty sweet. Heavy but sweet!

I saw one guy make the whole side panels out of diamond plate. It looked pretty sweet. Heavy but sweet!

was it aluminum diamond plate?

ive seen alum door panels and installed them in a DB drag car and they were light