I have been running a '99 Durango steering box in my TJ for the last year and it has made a huge difference with a locked front. I am sure you will be happy with your new steering box. As for the swap it really isn't difficult. Rent a pitman arm puller from your closest auto parts shop so they can eat the cost if you break it. Use an impact gun versus hand tools as it works better and is so much easier. Good luck!