I have started looking at options depends if you want a 1 din (smaller stereo) or 2 din (larger stereo)? These are the kits for putting them in:
I cant place an urls since Im new, so I am going to spell this out
goto
cardid dotcom slash 2015-jeep-patriot-stereo-installation-dash-kits
Now the only thing I am confused about is if you need an interface or not. I believe if you have controls for your stereo on your steering wheel you will definitely need this. Or if you plan two put a backup camera you will also need this.
Hope this can help you begin your planning?