I wouldn't think the carrier would fit because your stock rearend should be a 10 bolt. Just measure the rear end for width to your old rearend and then just move our mounting shackles to fit the springs on the car.
THis is just my 2 cents someone with more info might give you better answers
Any early 10 bolt setup will swap into it. That is 1955 - 1964 for all GM passenger cars and 1955 - 1962 for Corvettes. I'm not sure if this includes the physical mounting brackets on the axle housing, but I know that this includes any of the differentials if you want to swap them. I put a 4.88 posi unit in mine a while back. I keep a 3.36 laying in the cabinet and I'm told that my two door has a 3.55 posi setup...though I'm not certain yet.