Lift measurements

I just purchased the 3.5 in RC bolt on kit it arrived yesterday in open the box and measure the front spacer and it only measures like 2.1/4 inches and the back spacers measure 2 inches why is it that it dont measure 3.5 on front spacer will I get the 3.5 height that I wanted

 

Any updates about it?

 

The lift height will be greater than the thickness of the front spacers. You will get the 3 inches in the front, and the rear will be exactly 2 inches. This will keep the truck almost level.

 

From what I know, a quarter inch shim on top of the coil over of the front suspension equates to a half inch of lift at the wheel. The wheel sticks out further than the shock mounting locations so it translates to about double.