Rear end for 65 barracuda with 5x4.5 bolt pattern

Hi Scott welcome , I was lucky to find a 73-76 valiant 4 door got the front disc off it and it had an 8 1/4 in it found a set 3.55 and a sure grip and for brakes a Jeep Liberty gave me disc brakes they bolt right on for brakes. I have a 65 barr also works excellent. gary

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Looks great! Am I correct in that the 8 1/4" fit into the '65 without narrowing? What about spring pads and shock mounts?.. For the disc brake upgrade, what did you need from the donor car vs buying new? Thanks in advance as this is exactly what I want to do in my '64.