Its possible to restore the CAF's B-23 back to flying condition, but it would cost well over 700k to restore it back to flying condition by today's standards to where it would satisfy the FAA. To restore the CAF's plane correctly and to satisfy the FAA you would have to strip everything off the entire airframe, then bead blast the entire airframe inside and out to remove some of the corrosion. Then once the airframe is all down to bare metal inside and out and cleaned up, additional corrosion issues and damage can be addressed and the sheet metal repair work can begin. Some of those sheet metal parts would have to be reversed engineered, which most likely would require making molds from maple or other hard woods and placing them into an industrial size multi-ton hydraulic press to form these sheet metal parts from scratch. Even the sheet metal work can be very costly in just materials alone. Sheet metal and fasteners has gone up quite a bit in price over the last few years. You would also need tool & die makers and machinists to fabricate other parts that are no longer available. This includes machined, forged and cast parts that may need to be reversed engineered and replicated for the project. The most serious forms of corrosion are pitting, exfoliation, innergranular and corrosion stress cracking, which would require these parts to be replaced in most cases for airworthiness. All the electrical harnesses and hydraulic lines would need to be replaced with new. Instruments and radios would need to be sent out to FAA certified repair stations for overhaul or replaced with new. Restoring this B-23 Dragon would be a major undertaking that could end up costing well over 1 million dollars to make it all airworthy again with today's costs in materials. If you could find manufacturers and suppliers that are willing to donate materials and services, and have an all volunteer team do the work under the guidance of an A&P Mechanic, then the overall restoration costs could drop dramatically. The biggest challenge would be to get sponsors that are willing to donate materials and services. Just my $.02 worth!
Jim