Rear Differential: How do I know if its True?
 

My question is, is their anything that keeps my rear end when its bolted to the leaf springs to sit straight and true? Or, if the u bolts are/were loose is it possible to be off a little in one direction or the other? I know their are 2 pins that go thru the leaf springs and those pins go into the block which sits on top of the axle, is that block welded to the axle or is it just sitting there at random? :confused:

My truck is a 4x2 supercrew.