Ok I just got me '18 SCREW Raptor last week and about the only mod I'm considering is a leveling kit cause I'd hate to curb it at Starbucks. Seems everyone on here bashes the spacer blocks and prefers spring perch collars but from looking at ReadyLift's 1.5" kit it shows to include bump stops to limit down travel to prevent damage to the cv boots and joints. Anyone on here have actual experience with this kit? Also their 2.5" kit includes bother the spacer blocks and collars. And FWIW I had their 2" kit on my 2013 Super Duty that I traded in on the Raptor. Put it on when the truck was only a few days old and never an issue after 5 years and 80k miles.