Progress
Here's what is done so far:
The seats and door panels are out of the car. Initially cleaned and treated, they are starting to look good, especially the seats. For now they are stored in large trash bags, sprayed with Lysol to kill off mold and germs.
Doors, frunk and trunk look good. The trunk looks like it didn't even get wet. The amp and CDC4 in the frunk may be trash. Have not looked at the ABS module yet, but those are usually pretty weatherproof.
Water and oil have been drained from the engine and I refilled it with oil. I have not done anything to disturb the internals of the engine yet. After I pull the spark plugs, I plan to turn it by hand and see how it feels. Now that it has fresh oil in it, giving it some turns will probably be good for it. I have not looked at the fuel system, but I expect some water.
Fuses and relays will all have to be pulled and cleaned before I apply power. I have sprayed it all with a silicone spray.
I will remove the carpet, but for now, it is propped up to ventilate.
The lower half of the dashboard looks like it will be good, but the top part at the windshield is bad. I think that I'll replace the whole dash with a lighter colored leather one, and dye the leather to match.
The rear suspension has some damage, most likely from fork lift handling at the storage lot. Annoying, but not hard to replace the parts.
Most of that is summed up in these videos:
Summary of non-flood damage:
https://youtu.be/GiESGzor798
Work on the interior:
https://youtu.be/POrNuv438Rk
Draining the oil and water:
https://youtu.be/Xhh469sBop4
I need to pull out the center console, check the transmission, check all the electronics, switches, and top mechanism. I should probably open the fuel tank (under the battery) and pump out everything in it. Still so much to do, it hardly matter what I do next.