As the previous member mentioned, Mopar does not manufactuer any themselves, but their quality is top shelf , never had issues with the Mopar Brand, very well made and the fitment is 100%.
If you have the dealer install the items you are looking at , you put the responsibilitiy on them, and the warranty dos not get affected in any way. If that is the way you want to go , it might help you in how you feel. Most of the members on here including myself rather work on our Jeep , that is do as much of the preventive manitenance and mods our selves, and deal with the dealer later " If needed" , regarding our mods and warranty.
As far as your issurance worries, that is something only you at the end will have to over-come. I am at the point in my life , I do what I want when it comes to modding my Jeep, If your vehicle passed the state inspection,, you are legal period.... If it was up to the certatin agencies, we will be all driving these new smart cars, not me -- not my style...lol We all work hard in life and have our ways of relieving our stress, and if that is wrenching and modding our your Jeeps, ENJOY. Remember JEEP stands for ,,, " JUST EMPTY EVERY POCKET"...