I had the EVO transmission with exhaust skid on my 2018, took them off a month later when I had to change the oil and most of it went into the skid plate, the exhaust portion doesn't work with long arms.
For the JKU I have a Rancho oil pan skid but they don't seem to make it anymore. It was easy to put on, not in the way and covers the bottom of the oil pan nicely.