Most of the car is made up of reproduction parts. They can be test fit 10 times and still have to be messed with. Everything is edged in and put together and made to fit and work. The engine will also go in and be running as well as brakes and front end alignment before the car is painted. I would rather have all that finished then lean on fresh body and paint work and take the necessary steps when masking to prevent any damage to the body and paint work. Plus what is seen on some of these tv shows isn't always as simple as metal work, paint work, body work, paint, and assemble. It requires a lot of room. This car is being done in a home garage with the use of a spray booth from a shop. Thats a very logical question, its just the way I do things. When its finished you won't know how or why I did it this way.