The only gears I know of that are available to us are 4.30, 4.56, and the 5.38. You might want to do more hunting on some of the Trooper forums as they do alot of heavy modifications including drivetrain. There are 4.77's but I think they only fit the old generation troopers, and ours is basically a new generation trooper platform. I also agree with Spazz- do at least a front ARB locker if you can. No driveability issues, but push the dash button and you will be locked front, and the rear limited slip is about the best available minus some extreme rockcrawling but it can hold its own.

The good news is if you want 33" tires, the 5.38's will put you back to stock gearing and your speedo wont be off.

If anyone has found any different gear ratios- please share