i just took the factory battery out of my 2002 super duty. its a group 65 motorcraft, made by johnson control. it was installed in march 2002. it still works fine, gave it to a friend. replaced it with another just like it. group 65 should fit most jeeps without too much modification, i just put another one just like it in my 2003 wj. a group 65 is about the biggest factory battery available.
die hard platinum is sweet but pricey!
oddssey batteries are sweet but pricey too.