I've had this thing about a week and already replaced the trans. Now I want to lift it. It's got 3:73 (as I've been told) in the rear which I'll eventually change but I think it's got a locker in it. It's catches pretty quick (almost instantly) when spinning. Is there anyway I can tell if this is a real locker and not just a positive rearend from a junkyard. It'll grind a little when you get down on it. I'm wanting to go to 35's on 12" rims does anyone think that a 4" lift won't be enough? What's a good "soft" lift kit? I have a one year that will ride in this truck daily. Any Suggestion would be appreciated!