8 3/4 posi unit change

Mine has nothing like that on it I'm gonna get pics of my axle housing and axles and back plate and then u can see what I'm working with like I said before I'm new to this stuff but I've been told by others that it can work so I'm reaching out for the best advice I can get to get thus together and go racing
Well they obviously didn’t tell you that Posi track doesn’t fit in a Chrysler…