I have a 2020 1500 Big Horn North Edition and just installed the recommended Sumosprings for my truck. The North edition is suppose to have a 1 inch factory lift already on the truck. Because of this I used the plastic spacer that came with the Sumosprings. Adding the spacer put the Sumosprings right on the rear axle with no load. I was hoping for a little clearance unloaded because the ride is so smooth from the factory. My truck now feels like it's got heavy duty springs on it and the ride feels like what I would expect with heavy duty springs. It's not bad mind you but it certainly is not as smooth as it was before I installed the Sumosprings. If I get ambitious I may remove the plastic spacer to allow some clearance between the rear axle to get back the factory ride, but I'm not so sure I'm that ambitious right now. I am sure when towing the stiffer springs will help with stability and sag but my first impressions is I miss the sweet smooth ride I had pre-spring install. I live in MI and we are famous for our roads being rough. I definitely feel the bumps a lot more when unloaded. Also, the passenger side Sumospring was pretty tough to install as the rear stabilizer bar is attached very close to the bump stop housing and it's very difficult to get any kind of wrench in that space to attach the Sumospring mounting plates. I'll give it a month or two and do some towing with it before I change anything out. I'm towing an RV camper that weighs about 9000# so it'll be a good test.