Unfortunately, even if they gave you $100K to take it away, this will cost twice as much to save as buying a flying one. It's just not feasible. I hate to be that negative guy, but the most important thing for any aircraft is to fly. The minute they sit for more than a few years outdoors, the work exponentially goes up and it very quickly avalanches into an unsalvageable mess.
Just at the top of my head you'd have to do corrosion repairs for probably $100K. New windows all around would be $50K. Two engine overhauls would be $500K (I bet it also has the original -43BL engines, which almost no one can overhaul today). Interior, electrical, hydraulics etc would be another cool $100K. Boots and undercarriage overhaul would be another $80. New props another $40K... You can buy a Jetprop 980 for that kind of money.
This one is probably better to part out and have it live on that way.