keith, i didn't mount the bracket in 4 places, only the 2 @ the seat belt bolt... i didn't even know there was another one? never pulled up the carpet to look. maybe i'll try that.... i imagine they'll have to pull everything out including the carpet, etc anyways when I get my body work done so maybe i'll just leave it as is for now.
brent - no vented battery box. it's an optima battery so it won't harm me by being in the car unvented, but i know you're going to say that it won't be allowed on the track, but really it's only temporary, same with how i mounted the amplifier... there are some major rust spots in the hatch, wheel wells, etc... i'm going to have the whole car stripped down to the frame and have it completely restored body wise probably over the winter months. eventually i have big plans to put a large subwoofer in there and custom make some nice panels and mount the battery more towards the right rear permanently.
jdub - i had a local car audio place make them... i'm really happy with the way they turned out, they only charged me $250 for labor and everything which i think is a very fair price....