Hi Gutwosa
raising the engine will change the angle on the rear drive shafts upper u joint. this lift will decrease the angle similar to lowering the transfer case with out the loss of ground clearance. this lift is also nice when you have a 1 inch body lift to put the fan back in the proper location.you can combine the t/c drop and the engine lift BUT this will create harsh angles for the front shaft and linkages alignment issues. Thank You