8 3/4 rearend rebuild

The car will be set up for mostly the track with some street action. I bought the complete rear end with 741 3rd member. But I also bought an extra 489 3rd member with it.

I've tried to look around buy haven't found any how-To's when it come with tearing down the rearend and 3rd member. Anyone know any good manuals or threads?

Thanks again.