1974 AMF Harley-Davidson question

So... I rarely work on motorcycles but could not pass up a 1974 SS350 showing only 6100 miles for free. It is in great shape and even has a somewhat interesting claim to fame. The PO apparently damaged the part in the pic by prying off the flywheel. Question is where can I find a replacement part. Can a shop rewind it? Should I try? Anyone on this site have the ability for a fee. Let me know your thoughts. I don't want it sitting around all apart as pieces get lost. Since I do not know exactly how it goes together...yet...I don't know for sure I have all the parts. Thanks