1993 Mark VIII

I bought a 1993 Lincoln Mark viii. It is hit hard in the rear and also the front. The car has not run for 3 years but still turns over by hand , oil looks good, all electical looks good. I can't get the engine to turn over. The anti theft light is blinking but will time out after a few minutes. I reset the collision switch in the trunk. It will not come out of park with the key on and the battery hooked up but dissconect battery and it will shift. I would like to make the engine run before I pull it out of the car. The old owner said he ran the car before it was stored. Is there some way to over ride whatever is causing this? Do I neet the code for the door key pad? I only have a single key.