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Cranking the T-bars is leveling the truck. The only difference between that and a leveling kit, is the kit comes with a 1" block for the rear. The front relies on cranking T-bars.
You're already running 32-33s unless they are like 275/60 or something. 275 relates to the width. The second number is the ratio of width to height but easier to think of as sidewall height.