What I have here is a OEM Dana 42.434 DANA 80 Rear Axle Differential Cover Diff with bolts, manual and extra plug. 

This diff cover comes with two magnetic plugs long magnet and short magnet to match your application. 

This was bought new opened and never used. 

This is a factory Dana Replacement part. 

Shipping to the lower 48 US states is free of charge.