If you've never done a trans rebuild you're in for a real learning experience. I would suggest leaning on a friend that has some experience. The 4L60 is not the easiest trans to do. There are several special tools required and a press is real handy. Absolute patience and attention to every detail is of the utmost. If you can find a transmission parts retailer in your area you won't have to buy two complete kits as suggested by the previous poster. Individual parts can be purchased if you do destroy something. Mainly lip seals because they are very soft and it doesn't take much to destroy them. As suggested a rebuild manual is very important. READ, READ,READ, and READ some more. Transmissions are a no nonsense devise. If it isn't done exactly right it won't work. If it is done right and it works then the satisfaction is wonderful. Good luck. If I can be of any help you can email me at Skipzcar@aol.com.