This battery box holds an Optima Batteries 34/78 battery and is designed to mount directly to the core support of the driver side of your 72-93 dodge truck, utilizing two of the original battery tray bolt holes, but relocates the battery lower down out of the way and view. 
   The key reason for this is to make space available for our inner fender smooth plate kit that has access doors to the space available behind the inner fenders. 
   Will not work with intercooler piping