The mod that I am most happy with on my truck is the rear locker. I have been places in 2wd that I usually had to use 4wd. Of all the mud tires that I have used, the swamper pulls the best in mud. It cleans out easily without a lot of horsepower and wheelspin. They don't last long on a dialy driver though. I am running 35's now with a rear locker, 5.29 gears and 5" of lift. If it was my truck and I was on a tight budget, I would get a 3" body lift ($50-$100) and run a 33" swamper (the ltb's are pretty cheap) with stock gears for now. Later when I had saved up some money change the gears and add a locker. That's my 2 cents worth.