It will change the way it rides.

Another thing to consider. The coilover assemblies designed for our trucks have a specific length when fully extended. That length is determined by the optimum travel range of both the suspension linkage, and the operation range of the CV joint. Adding a spacer on TOP of the coilver may likely forces the knuckle droop to be further than what the CV can accommodate. I.e. extreme CV angle when either of the front wheels is nearly unloaded.

Consider the scenario in which you're climbing up uneven terrain. One of your front wheels completely unloads and that CV angle is now way past the normal operating range because of the top spacer you added. ATRAC kicks in, and locks the brake at that same corner, and now your drivetrain is transmitting intermittent torque through a CV who's angle is very close to, or maxed out. Bye bye CV joint.