I just measured and the front is 11" and rear is right around 8". If I'm going to replace the front springs should I just replace the rear as well? How difficult are the springs to replace as "DIY"? Thanks!!
Yes, you would want to replace front and rear springs together if you decided to do a suspension lift to accommodate the larger tires. The first time I did it, it took 6 hours. Now I'm faster, but I still take my time and I'm at a place where I have to make a lot of adjustments because my build is more complicated.
Another option for some more clearance is to do a small body lift, 1-1.25". It is less labor intensive, actually pretty easy comparatively, and takes less time. There are a few other things you would need if you went this route, like possibly extending the gas filler tube by loosening it at the tank and extending a bit, adjusting the Transfer Case shifting bracket, or replacing it with a cable driven one.