I want to do a 3'' body lift on my 07 NBS Silverado 1/2 ton and I cannot believe how much they want to install it. I already have the 2'' level kit and 2'' blocks in the rear so this would net me 5'' of lift, enough for 34'' tires. I've talked to two 4 wheel drive shops and they want between 1200-1500 just for labor. Does that seem high? Anyone else run this setup?