I m new to the site.I bought an 05 wrangler sport, impact orange with the 4.0, and the 6 spd. was going to it lift it and put bigger tires and wheels, but instead decided to get a rubicon for the bigger axles and lockers. so I looked around and found an 05 wrangler rubicon impact orange 4.0, 6 spd it was already lifted and had 35x12.5x15 wheels. It has a 3 inch body lift , and I have no idea what kind or size of lift. I know alot of pepole on here say body lifts are bad,but why are they so bad? And i need to change the gears but am trying the decide 4:56 or 4:88.