Worst enemy?

That would be great, but when I sold my house the shop went with it. Did it all in the car. Thermostat, water pump, belt, tensioner, idler, chains and sprockets, rear shocks, O2's, upper and lower hoses, battery, blah, blah, blah. I don't want to do it again. My only concern is when I get it back together it won't run. I'm not sure how much of its memory it will lose.
If its all right , cycle the key a couple of times it’ll flash right up make a little noise and be quiet after that .