I'm in the exact same boat as the OP and just want to bring the front up a bit on my 06 to have it just at or below level as if it were new. Was told the Ford F-150 keys were the ones to get. I saw a pic of them compared to stock keys and noticed the hexagon was positioned differently than the stock. Was wondering if that's all that would be needed since it would have the rod turned a bit to go in the keys and bolt back into place. Don't want anything extra or extreme, just stock tires and rims and looking normal.....not like my Z is a coke addict and sniffing the white lines down the highway.
I'm not interested in bigger tires or rear coils or what rim and tire combos look the best, and the OP didn't mention any of that crap either, so please keep this on topic because THAT is what is important to me and presumably the original poster. Sharing of information is great and appreciated at times, but that shit is worthless if the info is not what one wanted to know. Sorry for the rant, didn't shoot too well in a match tonight, only to drive home from Nashville and catch the end of the game, OT and Nick Saban's smiling ass on tv. Punk *****
The keys below are a stock Chevy key on the bottom, and an F150/Expedition lift key on the top. You can see how much more the Ford keys are indexed... in fact, TOO much. Mind you, these are LIFT keys for the Ford, a stock Ford key wouldn't have as much difference.
I have these at zero extra crank, the passenger side is resting on the little bar in the TB key mount with the bolt just to snug, and the driver's side has about 3 turns, just enough to bring both up to the same ride height. I'd say I'm at just about 3" of lift with these keys. My upper control arms were practically resting on the stops, so I pie-cut the underside, and bent them down about 3/8", and tack-welded them back together. A free-travel mod for us lifted guys, if you want to call it that. My fender heights with 34.1" tall tires (275/65/20's) are at 39 3/4" front and 40 1/2" rear.
IMO, if all you want to do is bring the front up a bit to make it match the rear, there is no need to buy ANY aftermarket keys, unless your torsion bars are worn out. The stock keys have enough room to be cranked up, nearly 2". If you do add keys to raise up over 2", then the rear end will be lower, unless you either add Z71 springs, rear coil spacers, or both.