Flooded damaged car

Hello and welcome to 2CarPros. Personally I wouldn't touch any modern car that had been in a flood. Especially anything exotic. Unless no water at all got inside and it got no higher than the rims on the outside. There are a few hundred electrical connections that need to be disconnected and checked for water intrusion, anything that was powered up when water hit it would be suspect. Differential vents, transmission vent, fuel tank vent. Anything that was possibly underwater like the exhaust or electronics will need to be taken apart and verified as good.
Then you have all the hidden areas like body seams or inside the panels that the water gets into. Those areas don't have much corrosion protection to begin with and there are items in there that can get damaged. In this case that car may already be a salvage or even total loss write off for the dealer.

As far as exact help the only place for that is direct from Ferrari either through the dealer or buying the data directly. They do not let anyone who isn't an authorized dealer have access to the information.

You can do it! I used to work at a dealership that would purchase similar vehicles with flood damage or other issues that other dealers could not figure out and I always got them running. But I love challenges, and at the end of the day a vehicle is a vehicle whether it costs $1,000,000.00 or $1,000.00, and I’ve worked on all of them! Start with the basics, check for body ground corrosion by removing the seats and the floor carpet, fuse panels can be affected as well if they are on the kick panel areas. If you were near me I would totally help you but San Antonio Texas is far from most places lol. Good luck!