What mounting positions are the bolts in? For example, my TJ has the bolts at 12 and 6 o-clock. That's the first thing to look at. Second is the plug. Take a phone pic of your plug to the parts store and see if it matches with the durango alt. If it will mount up, but the plug doesn't match you can cut the plug and wire on your old one. You better know what how an alternator works and what yoju're doing on that though. Billavista has a good tech article on pirate now.