[Joe Bob]

Depends on the rust and its history. Lot of threads on hibernating and starting them up.

Obviously all the fluids, tires and a new battery. What does the owner say besides "it was running when he parked it?"

BTW, it's a dry sump and holds 12 quarts of oil. Don't buy expensive oil as you will likely dump it soon, use a proper oil filter. Good idea to get a Bentley manual and READ it.