Dana 60 conversion to A body

Have a 72 GM Dana 60 that is a candidate for converting to my 65 Dart. Respectfully, I'm not looking for "why not an 8 3/4?" I have those. My question is about offset and overall width. I plan on doing the spring mount inboard kit, but is there any tables or lists for A Body widths for these? I have found some info, but still looking. Looking for more concerning which tube is supposed to be longer for the offset as well. Any feedback would be appreciated....thank you for your time..Patch. P.S., this will be mostly for street driving as far as tire/ wheel challenges. If I have to widen the wells, I'm at that stage where it can be done.