Know of no printed doc that has concours restoration info, in a comprehensive manner.
I'm no expert, jsut a semi-informed enthusiast, but most of the books I have seen (have not seen the one you note) are more "general" guidelines, as specifics of any car are too varied for a one-size-fits-all book.
The details between Mopar, Ford, Chevy, year-to-year and running changes within one manufacturer/make, and even documented plant specific variants of specific issues are just too complex to put in a book about "restoring a car" and need to be more specific. Add o the unique nature of the GT/CS (many items are not standard "Mustang") and its get even more detailed.
A few simple suggestions:
1. Document everything you can. Take a gazillon pictures of anything and everything you can see. Both before disassemble and during disassembly. IMO you can't have "too many" pictures.
2. Ask questions and get multiple answers to confirm before accepting anything as fact. Some items are pretty cut and dried (VIN stamp on he block matched the door/windshield, then its pretty obvious its original). If going concours if you do something wrong its not fun. I have seen many novice restorers base decisions on a single point of input, which can result in well meaning but incorrect info being used... which can be very hard to re-do (personal experience with this long ago taught me this lesson the hard way!).
3. ask more questions.
4. if taking the car to a shop, I would suggest finding one that will let you coming and see progress first hand, whenever you want. Some shops have issues with his for legal/insurance reasons, but of paying them to disassemble they will probably not take the time to document as much as an owner.
5. Same for reassembly / restoration work. Pictures, pictures, pictures.
Good to see you have a interest in the hands on, too many owners use the $ solution and hand off to an "expert" an then take delivery without knowing much about the process or the car. I find the car-cheology to be a big part of the fun of owning/restoring a car like this... it will be a frustrating and sometimes painful process, but keep it in perspective and the end result can be very rewarding.