I bought my used 2017 XD 4x4 SL 5.6 a couple weeks ago and have been digging through all sorts of info to try and better my rig without causing warranty issues. I purchased the extended warranty so I dont want to do too much that would negate the money I spent. Have you installed the nismo? Worth it? What other dual exhaust setup might be better? All the exhaust discussions seem to be years old. Thanks in advance.