Originally Posted by mayonaise
i was thinking about that too. it'll hold up for a while, but it still won't be supported from underneath. when you have a big heavy sub plus an amp sitting on it 24/7, it'll start sagging eventually, even with thicker wood.

while you're at Home Depot, pick up a section of that L-shaped metal to make a reinforcing bar that will run across the entire width of the trunk above the spare tire well. screw it to the underside of the board, or even directly to the car. :thumbup:
edit- i don't know what it's called. it's like an I beam, but shaped like an L. like what's on the corner of this cabinet.