Spend the bucks ang get the ATG book for Torqueflites. Less than $20 at your local tranny parts jobber shop. Other than that, an inch-pound torque wrench and an 1/4" 8-point socket are a must. You will need to remove the valve body from the trans, but I can be done with the trans in the car. Other than that, cleanliness is far beyond godliness when I comes to the valve body. One spec of grit can screw things up. 2 cans of Gumout and an air hose will be your friends.
Get a new filter and gasket too.