I think you said earlier that you are running 315’s or the equivalent of 35” tires. I have the same tires and 3.5” of lift with and I have the 4’s and am slightly over corrected and they are great. If I’m you I’m aiming for the top end of the range of correction. Either way the DVS arms are the bomb, period.with Delta 3 Base it will be at 5.3 caster correction, OEM is 4, so it will be 1.3 over, is that too much to be concerned? I wouldn't mind the extra stability if the truck doesn't start bringing other things with extra +1.3 caster....