WHAT REAR END WILL SWAP IN MY 1965 DODGE DART

I know this has been asked before but from what I read they all start at 1967 a body width. I have an 8.8 ford with a 456 in my 1965 Dart its way to much for highway. I would like to put a 8.75 in it that might just bolt in or I can weld new perches on . Please give me the low down on year and model or width I need.

Thank You