I have an absolute VIRGIN hipo motor sitting on an engine stand in my garage. I just pulled it from a K GT fastback. It DOES NOT have the vin stamped on it. I have the orange paint marks on the following: flywheel, rear of block behind flywheel, every rod beam, most, if not all crank balances, and the main bearing caps. The heads on this car are within a day of each other, the date is stamped on the small pad by the timing cover. I looked all over to find the VIN, and could not find it. I have to say, this is the most satisfying moment playing with Mustangs,...to have this untouched motor in my posession.
I will keep looking for a vin, but I have not found it.
I will have complete pictures on the details soon.
Rob