I found a quadzilla box in my truck not hooked up trying to find out what it is the numbers on bottom of the box are xz2002-u and 47782 my truck is a 98.5 dodge ram 3500 5speed qclb 4x4  thanks for any input 

You have an xzt quadzilla.

@Me78569 Wouldn't the xz2002 number be the year it's designed for? 98.5 wouldn't work with a 2002 box.

likely, but I am not sure.  I would encourage the OP to Call quadzilla with the serial number.  my guess is it doesn't work though since it was unplugged

I believe this is the Xzillirator for the Ram 2500-3500 (diesel) 5.9L (325HP)
2004.5-2007 according to a quick google search