TF fender height difference question

[agnes the dog]

I hope I can ask this correctly. I would like to know the difference between the height of the front/rear fenders so I can figure out how much to drop. Assuming that the truck is sitting level (no rake), what would the difference be between the fender edge and center of the wheel for both front and rear? Obviously, the front fender sits a lot higher on the truck than the rear. Tire size won't matter since I'm only looking for the difference between the front/rear.

Thanks,

JJ