It's not the shocks that will give you lift, its the springs. You'll want to look for springs that have a higher number on the tag, such as 19 up front 59 in the back. Also just because the springs come from a Rubicon doesn't mean they'll be better, there's a chance they have the same number as the ones you already have.
You'll want to look at the tag on the springs you currently have on your Jeep, the last 2 numbers are the important ones, you'll want springs with a higher number if you're looking for a lift.
Upgrading to Rubicon shocks on a Sport will improve your ride on and off road, so if you can get them it is an upgrade.