What rear axle do you have? Since it's a country addition it came stock with a Dana 35, unless someone swapped it. If it still has the turdy five, you'll want to swap it with with either a 29 spline 8.25, or an XJ Dana 44. An 8.8 is also a great swap, but you will need to do a bit of fab work to get it to fit. I'd gear it and lock it before jumping to 35's, heck stock gears are going to suck with 33's. Oh and you'll need to swap in beefy axles if you want to jump to 37's. Here's a flex shot with 37's. BTW, I have very little up travel as well, but have a lot of droop. This setup works well in the rocks.