each bag has enough to do one end of the truck w/ 3 different options.....there's 2 tyes of bags, one has the soft-med sets and the other has the Med to hard sets.....I'd get the Med-hard (or heavy/stiff whatever they call it) and use the med in front and the between heavy and med in back.....and NC is on the same oil and springs I'd use except the rear springs.....trinity makes a cool dual spring kit...use the lighter springs in that kit if you use it.....I run those in the rear and the softer springs in front.......but all that aside if you are seriously bashing your T-maxx I'd recommend some upgrades and shock would be close to top of the list.....