They left out the suspension upgrades and lowering. I'd like to know more about what Callaway did there. I was shopping 2018 RSTs before I wound up going with a Denali and they aren't lowered like that from the factory. I also see they ditched those hideous RST wheels. If Callaway can tweak the tuning on the mag ride shocks then does anyone out there offer any kind of suspension tuner? I love everything about my Denali except for the ride at times and the way it sits up so high.