If u have a gen 3 Durango they are difficult to put in because there's no room to put the bolts on the headers themselves. I recommend o2 sensor extension which kooks doesn't supply they give u only two long extension. On the durangos you need four in order to connect the o2 sensors. I definitely recommend these just make sure you set aside at least 8 hours to put them on.
2016 RAM 1500. Longhorn. Works great!
It was a difficult installation??, definitely needed a beer after this one. I purchase both the 1 7/8 long tubes and high flow cats y pipe. FTY for 2016 and up make sure to inquire about the y pipe extension if you have a crew cab.. the one I received was 9 inch too short also hanger weren't correctly aligned. I Called kooks and explained the situation, wasn't too difficult to get it corrected. now they should have update the kits but be sure to check to avoid this set back. Free your ride..