I put the 3" rough country lift on my gals 93 wrangler with only one problem. The axle locating pins in the leaf springs were .050" over the origional so I opted to remove the pins and turn them down instead of drilling a larger hole in the axle. All is fine, no vibration etc but felt the instructions could have been written a little clearer. I also changed oil and never seen oil as dirty as what came out. I have been having the oil changed at Jiffy lube and decided to start doing it myself. Can anyone offer any reasons why the oil is so dirty? I have been changing it every 3k miles. Thanks, Frank