I’ve got an ARB that I’ve had for 7 or more years and never had a problem. I even use it on 120 from time to time. Always in my jeep or truck never a problem.
This is what we use. 06 rubicon lj with an auto and 5.13 gears. You know it’s there but we’ve towed it to Texas and back. It’s our tent on wheels and always a project.
It won’t change the suspension just raise the body to give you room to tuck the transfer case up. Then you need the motor raised to help get the drive shafts a little happier. You also need to raise the the steering shaft to line it up better.