1967 to 75 A body rear end Drum to Drum

dbs1473 said
Will this fit my 73 Dart? I am new to the Mopar scene, my wife bought me my first one in my life for my birthday on Feb 14, so forgive me if I don't know all the specs, but do know from researching what I want out of my new mopar, the 8 1/4 posi is exactly what I want.

it will fit, however this is an 8 3/4 (stronger) but it isn't a posi. The description says "open"

BTW the term Posi is generally used with Chevy guys, Mopar called it a Suregrip. Good luck with your new Mopar.