Yup.
The owner sent the car to a shop to have it worked on, but the s
They took the money and ran, and never fixed anything. It "ran" before the going to the shop, but came back inop.
I assume the shop removed the hood for primer, but left the car outside unprotected in the AZ monsoons.
Look at it like this...
Water started outside the engine. This wasn't a headgasket blown or coolant passage allowing leakage into the cylinder.
So, BEFORE the water could make its way into the combustion chamber, it needed to go through the carb, down the intake, THROUGH THE CYLINDER HEADS, and into the combustion chamber.
It also begs the question, has oil been drained to check what if anything passed into the crankcase?
So, if after passing through all those areas the cylinder became badly rusted, what kind of shape are heads/valves/springs in? If water is in the crankcase what, if anything, has happened down there? Remember heat/cooling cycles make surface condensation in every space the water was present.
So consider that for trying to drive with that engine.