Levelling Kits - 99 Gmc 2500 4x4 454

[Chilledspode]

Hi Folks,

 

I am new here and have lurked around a little...

 

I have a 3-4" body lift in the truck and just mounted a set of 20x10 with 305/50's and could use a little more front end clearance and am looking at a levelling kit.

 

I need to confirm this, but I am pretty sure I have already had a shop torque up the torsion bars as far as they would go and the mechanic said any more and he couldn't hold my wheel alignment.

 

My question is: is there a levelling kit that will give me 1-2" without introducing/aggravating a wheel alignment issue?

 

Cheers and thanks for your time

 

Mark