Wedge

but then again the other pic's are the Diff I have in a junk car that was talked about a while ago, what is it..is it worth pulling out as the axel's shafts have castle nuts in the ends

!!DOH!!! LMAO Now those make more sense. Castle nuts on the ends of the axles == 64 or earlier Mopar axle IF it's a Mopar axle. I'll see if I can find a casting no.

EDIT ........gets back from Google

https://www.google.com/search?num=2...9.0....0...1c.1.64.hp..19.5.758.0.q07M5Uvn9I8