IMPORTANT NOTES BEFORE ORDERING: 1. The front kits are thinner than 3", and the rear blocks are thicker than 2". But they will raise the truck by 3" in the front and 2" in the rear. 【Explanation】: The lift height and kit thickness are not 1:1 due to suspension geometry. 2.Factory blocks need to be removed before installing new rear blocks. 【Explanation】: The kit design does not include, or account for, the thickness of the factory blocks. The rear lift height will not work as intended if the factory blocks are not removed prior to installing the new blocks. Please note:An alignment is needed immediately after installation.