I would be a very wary of the deal as the aircraft is certainly out of Annual- Inspection needed. Review ALL the logbooks for any damage history and what was done on past Annuals. All ADs complied with? Make a paid fresh Annual by the seller a requirement of the sale with your approval also of the required/needed work AFTER the A&P presents a list of all required inspections, and fixes that are agreed upon with YOUR input as well. A test flight after all work should be another requirement with the A&P onboard the flight. Has the aircraft been hangared all its life? Heated hangar? Any preservation done to the engine? Have you called the FAA about its revoked status?
I suspect the seller might balk at all this-so then I suggest you walk away from it. Consider this as NOT legal advice-just normal, logical requirements in such a possible purchase situation.