07-04-2008, 10:13 PM
do you know what gear your running now?? What size tires are you currently running?? To get back to turning factory rpms at at cruise speed you would need 4.56's if you are a standard 3.54 gear, but I would see what my stock gear is first and go from there. Bronco graveyard has a good chart to help with gear ratio's if you need to see first hand. And x2 on getting someone to install these for you. Not bad once you've done it a couple of times, but the first time or two is ROUGH!!!