Specs: http://www.braillebattery.com/index.php/braille/product_batteries/b3121
I used it for less than half a season (saved me 40 lbs), took it out in November. Been sitting on a trickle charger and since the car is on ebay, I dont have plans to keep this.
It really is an awesome battery and never had issues starting up the big boy v8.
Going for ~$180-200 online.
$150 obo