It doesn't make sense why there are a couple guys that have mentioned it off hand, and have not shown the interference that necessitates it. Why have many others who have had success in the modification not mentioned it in their threads?
I'm going to be bolting mine together this weekend and I guess if I have a fitment problem I will have to deal with it and will report back here with a pic to document the problem. I want to run the D44 ball joints, I feel that they are beefier. I guess I will check out the differences in size when I get the D35 knuckles off. The Spicer D35 BJs lasted about 15,000 miles. I'm going to run the Napa blue boot units this time.