More likely the rear is too low. Measure all four corners from the center of the wheel (middle of the star in the wheel center) to the underside of the fender lip. I'd expect it to be about 15.5 inches, give or take a half inch, all around. Let us know what you measure on each wheel, and also note how much fuel is in the tank (a full tank drops the rear about 1/2 inch). Changing shocks will have little, if any, effect on static ride height.