What Rear end is this??

Look at Pettybluedarts pict again. His 8.25 rear cover does not have a drain plug in it. Also look at where the axle housings fit into the center they look the same in both picts and match the chart.

Check the bolt pattern on the axles. Mopar and Ford and I think AMC are the only ones that used a 5 X 4.5" bolt pattern, GM used the 5 X 4.75" pattern.

Just my thoughts,
Joe