So I'm looking to replace my base model JKUS head unit with an OEM head unit that can be upgraded with u-connect. It just so happens that looking for the head unit from chrysler's website has gotten me pretty confused. I thought at one point that the infinity style head units were pretty much the same whether or not it's from a JK or a 300 but come to find out that even though the front looks the same, the back differs (maybe for the remote volume controls). How am I supposed to know which head unit will fit in my JK if there are several models? So I suppose that I need the proper model or part number so I know which one to buy off of eBay.