Bumping this topic and will follow up with it in January/February. Just ordered a 2025 RST diesel 4WD, I do not want to do the 6" kits. I am in love with how the ReadyLIFT 4" SST Kit sits so I am going to make it work. After doing extensive research, CV angles are what's messing people up so my solution, based on online research, is upgrading the CV axles to the Trailboss/Z71 CVs which are longer than the normal 4wd CVs. ReadyLIFT makes a 2.75" Lift for Trailboss/AT4 trucks that give the truck a total of 4.5-6" of lift, so if those CVs can do it, I dont see why they can't do it for a 4" lift on a regular 4WD. I cannot confirm yet if this is the fix as the truck was recently ordered and expected to arrive in December. If any other person has gone through this testing of the trailboss CVs, let me know. More to come.