Rear End ID HELP!!

73AbodEE said
technically , the one in your picture is not round either , its just rounder than the one in the chart lol

Yours is so much nicer looking than mine. I guess I need to jack it up and check for sure-grip?? I plan to sell it but I want to make an honest assessment of what I'm selling. It is in a a-body, can you give me an idea of what it's worth?

thanks,
Treblig