-06 torsion bars,keys,bolts or something else different than -03 ?

[SummitUp]

Yes, the Cognito upper control arm kit for lifted applications would be indicated for your situation. The folks at Trail Duty are highly recommended, they will answer your concerns soon.

Assuming you go the Cognito route, there are other alternative torsion bar keys that will give you the lift you want:

MAXX CAM 2 Leveling kit

ReadyLift leveling kits

Trail Duty carries these also.

A MUCH cheaper alternative (about $40.00 each US). is the Chevy 1/2 ton "green" keys (green is just a color code). They're really the same thing. If you have a GM dealership in Finland you can order these. They look like this (the difference is obvious, the H2 key is the one on top and the Chevy key is the one on the bottom):