if you are going back to 4wd then it "should" be fine and dandy, it will certainly be stronger than the 4wd setup

the info was to enable you to make the best judgement call in case you were going to sell it on as they are obviously more sought after and you can measure the various different parts that will make sure that you have a specific 2wd cossie back end to any potential seller (as well as clarifying the points to look out for when someone else will in the future ask the same questions)