Not exactly sure what you are asking. Correct me if i'm wrong, but I think you're asking, if you have a stock 3rd member with stock gears, what's it take to put in 5.29's.
If that's the question, then yes 5.29's can be put in a stock carrier, but it's not something a novice mechanic can do and it takes some specialized tools to do it right and if it's not done right, you'll be buying another set of new gears and starting over.
If you find a 3rd member that is already setup with 5.29's then it is a pretty easy swap to pull your stock one out and replace it with the built one.
Hope this answered your question, if not, reword it and i'll try again.
