Yeah there's heaps of good examples if you read the build threads. JayKays was the first one that sprung to mind, I knew he had good photos of the 30s hitting the ARB bar (seeing the ARB in OP's avatar).
I figured I'd just show a good example of what's required just for running 30s and was going to let everyone else comment on how much more trouble 31s would be; big guard chop, need for gearing, breaking various parts of the drive train, etc, etc.
