Straightening a 8.75 rear end

What kind of luck can I expect on straightening a 8.75 rear end.
'71 duster 42 years of being a race car, put back on the street about 5 years ago, with ladder bar rear end. not sure if it was the years of racing or the last 5 of street use (probably 400 miles) . The passenger side end has a measureable bend forward and down. I was looking for a dana, when I found someone who said he might be able to straighten it, Although he hasn't actually seen it. Will look at it this Sat. I guess he has a large fixture and jig. Just wondering what kind of success rate there is on something like this.

Thanks