Join Date: Jun 2003
Location: Wichita Falls, TX
If you have a stock style suspension (springs under the axle) blocks will actually lower your Jeep, not lift it.
Regardless, on a Jeep blocks aren't the greatest idea.
Sounds like you got this advice from a pickup guy. Rear lift blocks are common in trucks but their suspension design is significantly different than a YJs.
13 GC Overland - (Wife's DD) 5.7, stock
Past Jeeps: 99TJ, 78CJ7, 91YJ, 01WJ, 03TJ, 05KJ