1970 Silver Shadow Speedway 125 Sachs

I have a 1970 Silver Shadow Speedway 125cc Sachs. Complete except for air cleaner. My father purchased this new I think and it has quite the history and stories. I did not realize how rare this bike was till today when I started researching. I'm looking for some advice or suggestions on a restorer for this bike. I live in central IL. I'm not interested in selling.