Tell him to drive it like it is for a while, and learn what the jeep is capable of. Watch the Jeeps you run with and look at what you like and don't like, and then talk to them and find out what they like and don't like about it. Make a list of what you want, and then build it once, right the first time and save a load of money and work.
Or......rebuild it a bunch of times like the rest of us