I have the truck in the sig below (it is 2nd gen because it is a 2500/3500). I am looking for a smaller wedge for the rear leaf springs. Those of you who have gasoline 4wd 2500/3500s, are your leaf springs 3" wide? If yes, how tall is the wedge between the axle and the springs?

 

If you mean the block. They are 4" tall. 3" wide springs.

1500s have 2.5" wide springs and a 3" tall block

 

Yes, the block. Mine is 4.75" and my truck definitely looks taller than the gaser 4x4s due to the additional height of the Cummins Engine. Good info on the 2500/3500s having 3" springs. Thanks.