This is a Custom Battery replacment intercooler water and ice tank for a Chevy Silverado it has a 4" cap to add water and ice if needed,It has two 1/2" NPT fittings one is the outlet with a screen if you run ice and one is the return,It measures 10" wide by 6 1/4" deep by 5" tall $125.00 plus $13.95 for shipping here are some pictures if you would like to see more let me know and I will email them to you
http://www.gmtruckclub.com/forum/picture.php?albumid=1634&pictureid=9533
http://www.gmtruckclub.com/forum/picture.php?albumid=1634&pictureid=9535
http://www.gmtruckclub.com/forum/picture.php?albumid=1634&pictureid=9537