Before installing the battery I thought I should clean up the battery box some. Battery boxes (really a battery platform in this car) get all nasty and corroded from battery acid dropping on them. I couldn't get the box out so I brushed the worst of the rust an corrosion off and vacuumed out the debris, then hit it with some Rustoleum.
I soaked the hold down bracket overnight in Evapo-rust and painted it also. Hopefully this will keep rust at bay for awhile.
Next step: Why don't the interior lights and sunroof work?