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What differential rear end do I have???
I was gonna replace the differential fluid in my new to me 1970 GMC LWB 1/2t. Don't see a drain plug or a fill plug (are they on the front of the differential?
Can we tell by outside pics what kind of gears etc I have?
My SPID is long gone (previous owner replaced the glovebox with chrome one). Original seat was replaced also so no paper/sheet in the back of the seat.
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