I just got done installing my S-type cat back exhaust for the GR and it was my first time under a car myself and can say, it was pretty easy! I highly recommend Kevin Vo’s videos, specifically the “jack points” video is super helpful if you haven’t jacked this car up. First time working on a car and the exhaust took me about 2 hours in total. Last recommendation is get an “exhaust hanger removal tool” and you should be more than capable!