Woo Hoo, you wont be let down. As for swapping it out, it is pretty easy. No special tools needed! you will need some big wrenches and sockets like 20, 21, 22 ,23 mm I cant remember the exact size off hand, sorry.
Jack the rear of the car up around 14 to 16 inches.
Remove the under body plate
Put jack-stands on the frame in front of the rear tires
Pull off the drivers side tire
Remover the upper A-arm bolts that connect to the frame
Remove the two bolts holding on the stabilizer bar to the frame
Use a short 6pt 1/4in with a small extension to pull the straps off of the -propeller shaft (drive shaft)
Unbolt the 4 e-brake line brackets that mount to the frame. (you cant miss them) vip tie them out of the way.
Get a jack under the diff
Remove the 4 bolts that are on the diff mounting it to the frame via big rubber- bushings
With the slack you made from unbolting the A-arm and stabilizer bar you can slide the shaft off go the diff with a slight tug of a pry-bar between the diff housing and cv shaft.
With the drivers shaft off you can now slide the diff towards the drivers side -allowing the passengers side shave to be removed.
BAM! drop the old diff out and throw that **** way via shipping it to me.
Zip-tie up the two axles to the frame and out of the way.
Re install the new diff.
It took me 2.5 hours and that was with me laying under the car goggling over how everything is so race car like. Don't for get to add fluid and go putt around a few hundred miles before you start stabbing it.
If you have anymore questions or you want to chat about it PM me and i will give you my #.
Good luck, you can do it !