Welcome to the crippled gun project quest. It can be made whole again given enough time, money, luck and patience. As you may know a month after the last part falls into place or you give up and send it down the road extra parts or barrels will seem to come out of the woodworks. I sat on a DS 20 Lefever for six years looking for a set of 28" or even 26" barrels. Two months after I sold it I found a set. I bought them for a very reasonable price and sent them to the new owner. He might get it finished this year now that he has all the parts. He might not. At least now he has everything he needs.