If you are careful and you use Ford gears, and of course, have some decent tools like floor jacks and impacts. You can actually do it your self. Now I'm sure someone's going to jump on here about that being impossible but whatever, if I could build a 9 inch in my back yard at 17 years old, for my 57 Chevy, anyone can do it. The key is to use Ford gears, it takes a bunch of the guesswork out of it.