I had the 2" Motofab Leveling Kit installed on my Laramie yesterday. The ride doesn't seem to be affected. I wasn't initially in a rush to get it leveled, but I'm pleasantly surprised; it looks night and day better. Below are measurements from center of wheel to top of wheel well. Cost was $80 for the spacers and $200 for the install from a local shop in South Jersey. I'm waiting on the alignment until the new wheels come in. Attached are two pictures, from different angles, but you get the idea. The truck looks much meaner.
Before:
Driver front 21.5
Passenger front 21.5
Passenger back 23.5
Driver rear 23.25
After:
Driver front 23.0
Passenger front 23.0
Passenger back 23.5
Driver rear 23.25