67 coronet 8 3/4 in A-body

I have a 68 dodge dart with a 440 and 727 in it. Will a 8 3/4 out of a 67-68 coronet fit in my dart. If so what modifications will i have to do to the rearend to make it work. I know it will have different bolt pattern, not worried about that. Is it going to be noticably longer once its in the vehicle. Any information would be a great help. Thanks