I have been noticing a "clunk" when turning right on my 15' Z07 lowered with WCC's. I was told by many that it was because of the bolts and that they allowed the suspension to hit other components under the car.
Lowering Bolts to LG Drop Spindles
I decided the bite the bullet and lower the car in the correct manner. I just ordered the LG Drop Spindles. It will keep the same ride height, but have the same suspension travel as stock.
I will provide some feedback after the install.
Lowering Bolts to LG Drop Spindles