And, to do all of these items could be the bare minimum, if you're lucky... a few years ago a guy here in SE Texas had a hangar queen Navion that he was trying to sell with no takers, so he donated it to our CAF wing to be fixed up as a military L-17 Navion. The initial thinking was do a quick check on the engine and prop, put in a new battery, ferry it home. But, once at the hangar, reality crept in... we had to disassemble it and trailer it home. The beast had mud dauber nests throughout and corrosion everywhere. The wings were corroded so badly that in some areas you could poke a wrench through the skin, while the tail skid had been bashed with a tail strike which damaged the surrounding skin and the last two fuselage frames. The right horizontal stab needed reskinning. The engine, prop, interior, panel, wiring and wings were junk. We found an old Navion project in San Antonio that looked somewhat decent, bought it for $8k to use as a parts donor. We're using the wings, landing gear, aft tail cone and canopy from the donor to complete the original project as a ground up restoration with all new hoses, wiring, hardware, prop, engine, panel and interior. I don't know the financial outlay so far, but probably will be $80k or more to rebuild a ship that could be bought as a flyer for $40-50k all day long.
It's just a shame that so many of these old airplanes are rotting away into scrap metal... ugh.