Yep, I've done it and have the cool tools...but only a really swell guy I have known for a long time, or my family, would be able to get me to do it again...family would have to pay.
I may do my own some day in the future, but I would consider paying someone. The knowledge I gained was/is priceless, but the task sucked. I highly recommend you study what the installer will do, even if you pay someone else.
Do not unbolt the carrier unless you know what you are doing...the carrier bearing caps are location and orientation specific...don't screw this up for the person who has to do the gear swap...you may regret your involvement.
Consider making this a one time shot...get a full-case locker for both, if you can afford it.