Roy Jones...Tell me you saw it.
There are just as many negatives as positives. The Jeep goes down the road straighter, and that is enough for most people to justify it. I can't on my own stuff. Bounty pointed out a good reason not to do one. It also puts even more load on the front tires when braking. It's overrated in my opinion, but it's in no way a bad thing. Whatever YOU prefer, the positive and negative effects are both pretty minor. You might need a new longer spline front driveshaft.