The car is not all that rare or anything special. Doubtful you have any sentimental attachment. Objectively, it's rotted basket case with no financial return.
My $0.02 having built and owned my '68 for 43 years, offer $20K for the body and buy a new, R3 shell. Build a new, BBM side oiler. Put an eye stopping, flow coated paint job on the shell. Transfer all the hardware from the old body. Consider a Holley Sniper EFI and ignition. You'll have beautiful, rust free, reliable, car. Something you'd have no second thoughts to drive cross country. Fast enough to scare you and turn heads where ever you go. If you decide to sell, and honest about it's history, lot of folks looking for something other than a fragile, trail queen. Keep in mind, the highest selling, '68 auction cars were not concours restorations. Also, if familiar with the early Bronco market, those that run & dive flawlessly with professionally done up grades are commanding the highest price. You could always transfer the VIN from the rotted body. Such is legal in my state and on par with what Shelby planned to pass of with their 50th anniversary heritage restorations. Again, just my opinion.