You can do it with the car on the ground and not touching springs, it's just less room to work and the springs get in the way. I jacked up the rear so the weight was unloaded which allowed me to rotate the springs so I could get the nut in easier. If you play with it enough you'll get it, it's not difficult, frustrating maybe.So I'm ready to buy but I'm a bit confused. Your site says it's a quick 20 minute install but here your are saying to remove the sprigs. I have a 2016 with stock exhaust, what am I looking at for the install?