What Am I Doing Wrong????

Hey guys, I just switched out the 7 1/4 rear for an 8 3/4 in my 73 dart swinger. I put in Yukon axles with green bearings and have 235/60-R14 tires on it. I put in brand new stock rear spring shackles.

My problem is now the passenger rear tire rubs against the wheel well and the driver side is fine. It's like the whole rear end is shifted to far to the passenger side of the car. I tried unbolting the rearend and pushing it over but nothing happened.

What am I doing wrong? Do you guys have any idea what the problem is?

The 8 3/4 rear was off of another a body.