When you lifted anything there is only so much play in shocks the stock ones.
A year ago i put in two new torsion keys but not shocks that what I'm doing now.

Here is a piece from Performance Products.

2in leveling kit
Extended length bilstein 5100 shocks

Most GM trucks owners know that the quick and easy way to gain a couple of inches of front end height is to crank up the factory torsion bars.What most GM owners do not know is that cranking the factory torsion bars and keys limits suspension travel(factory shocks are not long enough),creating a harsher ride and acceleration front-end wear. The ORU systems uses special torsion-bar adjuster (which i bought)cogs that are re-indexed to level the vehicle without compromising suspension performance