Body lift, or Superlift. Superlift is the only currently produced suspension lift and it's a measly 3" kit for $2k.
If your torsion bars aren't cranked, it'll be a total of 3" because it levels out the truck. That's how I view it.3" rear lift, yes. 4" front lift. Even though it only drops the control arms 3.5", the other .5" is made up by extra torsion bar cranking.
but like i said if you are looking for a little lift this would be the cheapest way and stay far far away from body lifts if you plan to hall anything i have seen nothing but issues from them on the smaller trucks. they the body blocks tend to push up thru the bed floors. if you do decide on a body old trick that we used on the full size was hockey pucks. they are bigger in width than the body lift kits sold support better just make sure to drill straight and the same thru the stack and tighten them good