I'm trying to rebuild my truck from a recent accident when it happeed the driver side rear u bolt broke, blocks moved forward &now the back tire is up against the back of the bed.I have new tires for this thing getting a now od unit as you may have seen in another post when this happend from the way the back axle went it cracked the od unit.The frame isnt bent.Besides that I have fenders &a bed etc coming.Just looking for whag to do about this back axle.
Btw I have the piece thats missing that goes ontop under u bolts

 

Looks like the u bolt broke(can't see the other side). Take them off and reposition the rear/block/spring with new u bolts and you should be fine.

 

Agreed, but after checking the spring perch for integrity and the pin off the block.

I have my whole set and can be had for price of shipping. Blocks plates and ubolts. Use the ubolts at own risk.