davjed,
Here is a quick assessment of parts which are unusable.
Your frame is a 1906, grip-safety style frame. To assemble this gun with a grip safety, you will need the grip safety itself and an appropriate spring. It cannot be told from the picture, but the sear bars may not work with a grip safety. Also, the thumb safety lever may not work with it, and you will need a grip-safety style left grip.
Alternatively, the gun may be assembled as a standard P08 by leaving off the grip safety and using a standard left grip; however, the safety bar and thumb safety lever may not work with this frame.
Be sure to obtain a takedown lever spring.
--Dwight