Looks like its a glorified Leveling Kit with different upper control arms. I don't have any experience with them, but it will still negatively effect your ride. It doesn't appear to include a differential spacer so your CV angles will be BAD (tie rods will also be at an angle).
Honestly, the best way to level the new trucks, which I'm assuming you have, (fill out your signature with your truck's info, it helps us help you) would be lowering shackles in the rear. Ride isn't effected, just the amount of rake is.
But if height is what you are after, with these trucks its either deal with the bad ride from cranking the torsion bars, or properly lift it...
Brandon "Make power, not smoke."
2017 LWN CCSB Z71
All stock as long as the warranty is on it. (But the delete kit has already been ordered..)
2007 LBZ CCSB 4x4 - Sold 297+k miles of grins.
Performance: EFI Live by Idaho Rob, CTS2 with EGT, S&B Dry CAI, 3" MBRP DP, MBRP 5" XP Series, FASS 150
Exterior: Iron Cross Front, Fab Fours Rear, Keystone Hood, 30" Totron Lightbar
Suspension: Cranked to clear 285s on painted PYOs, Skyjacker 1.5" lift block, Bilstein 5100s, Rough Country Tie-Rod Sleeves, Longhorn Trac Bars