hi i have a slight problem with my diff i have noticed the bolts that are threaded are on top and the long one on the bottom goes straight though i have noticed on other builds its the other way around also the top left mount is to wide by about 20mm this is not a problem i can modify the left hand bracket but wanted to check to see if the axle has been but back together upside down as im going by the vent on the back plate
is there any other markings to see what way up it goes
many thanks rick

You have a 7.5 ins diff the top bolts are threaded the bottom bolt is a long bolt that goes right though both mounts
Jacko

http://how-to-build-a-pilgrim-sumo.wikidot.com/rear-suspension-and-diffs
here is some thing to look at

Many thanks thats put my mind at rest