I have the three inch suspention lift and a 2 inch body lift. I drive 75 miles round trip over hills on rough roads every weekday. I removed my antisway bar and I like driving my Tracker more now than I did before. When I went to 31's from stockers my top speed went from 85-90 to 75-80mph so there is a pretty big difference in gearing. However when I swiched to the 16V motor I got my top speed back just not going uphill. When I am on a smooth piece of highway it really doesnt seem to ride any different than it did before. If anything it feels a little more responsive in its handling. So I say get the three inch, if its way to rough for you just put your stock springs back in with some spacers to get your ride back. Then when you turn your truck into pretty much a trail rig you can put the big springs back in.